was momentarily obscured. When the crowd parted,
   she saw he wasn't alone.
   He had one hand on the shoulder of a pretty girl
   with long black hair and big dark eyes. She was about
   Bess's height, very slim and petite. Bess sighed as Jason
   steered the girl away from the bar and ducked behind a
   curtain near the small stage, pulling the girl after him.
   Bess sighed again and started to turn away.
   Nancy patted her shoulder. “Hey, there are plenty of
   other great-looking guys at this party, Bess.”
   “But they aren't Jason,” she grumbled, glancing back
   at the curtain. Nancy rolled her eyes, then watched in
   surprise as the girl dashed out from behind the curtain.
   Her face was flushed, and she looked flustered. The
   girl elbowed her way through the dancers, her eyes
   blazing, her lips pursed.
   “What a creep!” she grumbled to herself as she
   passed Nancy.
   Nancy stared after her. What had Jason done? she
   wondered, then decided it wasn't her business.
   Jason was making his way quickly across the dance
   floor. He looked angry or annoyed or disgusted—
   Nancy couldn't quite tell which. Bess didn't seem to
   notice. She planted herself directly in his path.
   “Hi!” Bess greeted him brightly. “Want to dance?”
   Jason stared at her as if he'd never laid eyes on her
   before. His expression darkened. Without so much as a
   nod of recognition, he marched off through the crowd.
   3. Double Vision
   “What's his problem?” Nancy shot a look of disgust at
   Jason's back, then turned to Bess. Bess's lower lip was
   trembling. The guy had practically reduced Bess to
   tears.
   “Hey, he's just a primo jerk.” Nancy patted Bess's
   shoulder.
   Bess heaved a deep sigh, then forced a smile. “Right.
   Shows you looks can be deceiving. When am I ever
   going to learn?”
   “He had me fooled, too,” Nancy was quick to point
   out. “He seemed so sweet this afternoon.” Whatever
   had happened between him and that girl had put him
   in a bad mood. Not that that excused him for being so
   mean to Bess.
   “What a two-faced skunk!” Bess gasped, grabbing
   Nancy's arm.
   Nancy followed Bess's gaze. Jason was directly
   across the floor, talking animatedly to Eddie Lan-
   dowski and a well-dressed older man. Jason shook the
   older man's hand, his face all smiles.
   Bess snorted. “I guess lowly souls like us don't
   count.”
   Nancy shrugged. Privately disappointed, she told
   Bess, “Jason's probably just working the crowd for
   contacts, and we shouldn't let him stop us from having
   a good time.” Just then the next song blasted out of the
   speakers. “I feel like dancing. Come on . . .” Nancy
   began to tug Bess toward the dance floor.
   Bess hung back. “Sorry, Nan. I'm not in the mood.
   I'm going back to the buffet to drown my sorrows in
   one of those dips.”
   While Bess worked her way back to the lavish buffet,
   Nancy decided to look for George. She skirted the
   dance floor and pressed herself against the wall. She
   found herself standing next to the girl Jason had been
   with.
   “Hi,” Nancy said.
   The young woman turned her dark eyes on Nancy
   and frowned lightly. “Do I know you?”
   Nancy shook her head. “No. I'm here with Lisa
   Perrone. My friends and I are staying with her for the
   weekend. You work with Lisa?”
   The young woman nodded. Nancy realized that
   whatever blowup she'd had with Jason, she was over
   it—or had at least calmed down. “She's our new in-
   tern—very nice and smart, too,” she said, then smiled.
   “Oh, by the way, I'm Inez.”
   Nancy introduced herself and checked Inez's
   nametag. Her last name was Rivera. “So what's your
   job?”
   “I'm a publicist.”
   “Oh.” Hadn't Lisa mentioned that Jason was hired
   by the publicity department? Maybe his fight with Inez
   was business related and not a romantic blowup.
   Curious, Nancy asked casually, “So you know Jason
   from work?”
   “Jason?” Inez repeated neutrally. “You mean Jason
   Woodard?”
   “Yes, the photographer,” Nancy answered.
   “Sure. I know Jason,” Inez said with a shrug. “What
   about him?”
   Nancy was taken aback. Inez was acting as if nothing
   had happened between them.
   “Sorry, got to go,” Inez said suddenly. “Some friends
   of mine just turned up. See you later,” Inez closed with
   a friendly smile, then started toward the front door.
   Before she took two steps, she stopped. “But if you're
   looking for Jason, he's over there.” She gestured with
   her head.
   Nancy's jaw dropped. Jason certainly was right over
   there—dancing up a storm with George. The DJ had
   switched to a hot top-ten swing tune, and George, who
   adored swing, looked as if she was having the time of
   her life.
   “I don't believe it,” Nancy muttered, then noticed
   that in the very overheated room, Jason had put a red
   scarf around his neck. His cheeks were bright pink.
   The music blared a moment longer, then stopped.
   George and Jason fell against each other, laughing.
   George raked back her short hair, caught sight of
   Nancy, and waved. Grabbing Jason's hand, George
   practically dragged him toward Nancy.
   “Hi, Nancy.” Jason grinned broadly.
   Nancy was tempted to tell him exactly what she
   thought of his two-faced behavior.
   Before she could, George exclaimed, “Wait until you
   hear this! Jason has a brother. A twin brother.”
   “Have you seen him around? We look exactly alike,”
   Jason added. “He told me to meet him here.” Flashing
   a particularly warm smile at George, he added, “I sort
   of got waylaid.”
   “Did you just get here?” Nancy asked.
   “Yeah, probably five minutes ago.” Jason hesitated.
   “Why?”
   Nancy giggled softly. “I think I've already met your
   brother. And Bess and I probably owe him an apology.
   We wondered why you were giving us the cold
   shoulder, when it wasn't even you.”
   Jason nodded. “Everyone gets us mixed up, for at
   least the first three seconds. Then they realize how
   completely different we are. Ethan's more low-key. I'm
   the people person, he's more into”—Jason dropped his
   voice—“he's an antiques geek. He's passionate about
   everything old or collectible: heirloom quilts, Civil War
   swords, tribal art, pop star memorabilia . . .” Jason
   seemed about to say more but cut himself off. “See for
   yourself,” he added.
   Nancy saw Jason's double approaching, this time his
   face wreathed in smiles. The brothers, both dressed in
   black, were identical. The only clue that they were
   different men was Jason's 
					     					 			 red scarf and the fact that his
   face was still a bit pink from dancing.
   Looking directly at Nancy, Jason's twin said, “Hi, I
   heard you're one of the girls who discovered that Lou
   Knight tape.” His tone was a bit stiff and more formal
   than Jason's. Nancy couldn't picture him dancing with
   George. How did a guy like this even know who a blues
   singer like Lou Knight was?
   George gaped at Ethan. “Where'd you hear about
   my tape?”
   Before Ethan could answer, Jason introduced him to
   Nancy and George. Jason added with a wicked gleam
   in his eye, “Ethan has a way of ferreting out info, don't
   you, dude?”
   Ignoring his brothers mocking tone, Ethan
   shrugged. “I didn't have to dig to find out about the
   tape. Wes Clarke has spread the word already.”
   “Why did he do that?” Nancy frowned. “He warned
   us not to tell people about it.”
   “I'm sure he didn't tell everyone. He knows I'm into
   pop memorabilia. At the very least I'd love to hear the
   tape, and if you do decide to auction it, I might put in a
   bid.”
   Jason cleared his throat loudly. “As if you could
   afford it. Or do you have a side job besides the one at
   Westfield's?”
   “I wish!” Ethan said.
   “Westfield's?” Nancy was impressed. Westfield's was
   a small but prestigious fine arts and antiques auction
   house in Chicago. She'd heard quite a bit about it over
   the years from her father's wealthy clients. Westfield's
   had a reputation for honesty and fair dealing. “You
   work for them?” Nancy's opinion of Ethan went up a
   notch or two.
   Ethan puffed up a little. “Yes,” he admitted. “I'm
   one of two appraisers in training there.”
   “Translation: entry-level grunt work,” Jason teased.
   Ethan shot him a cool look. “Someday I'll have a
   chance to earn commissions—anyway, I do have some
   savings,” he said to George. “Though if this is the lost
   version of that song, as Wes said, it will be too rich for
   me. I am a bit of a blues freak, and I have every Lou
   Knight record ever made. I probably couldn't verify
   that the tape you found is the lost one, but there might
   be some clues on it about why the band broke up. I'd
   be interested to check it out.”
   “I—I don't know.” George questioned Nancy with a
   look.
   “The appraiser did say that you shouldn't play it
   much. It's fragile, and if it broke . . .” Nancy said,
   shaking her head no.
   Ethan hurried to reassure them. “I know lots of
   professional musicians with professional equipment.
   The musicians will treat it like gold. And of course you
   girls would be there. I would never ask you to lend it to
   me.”
   “If you put it that way,” George said, still hesitant.
   “But we'll be here only for the weekend.”
   “That's okay. I can set something up. Are you going
   to Jason's party tomorrow night?”
   “Of course they are,” Jason said quickly. “Though I
   haven't had a chance to invite them yet. Come with
   Lisa. It's an opening at my loft to show my new prints.
   Bring your pretty blond friend, too.”
   “Great,” George said.
   “And bring the tape with you,” Ethan suggested. “I'll
   make some calls tomorrow to see who has the right
   equipment.”
   “Sounds like a plan,” Nancy said.
   “I'd better run. This is a work night for me,” Ethan
   explained, and started across the floor.
   “I'm going to the buffet. You girls want anything?”
   Jason offered.
   Nancy and George both said no. They watched as
   Jason caught up with Ethan and said something to him.
   “Tell me I'm not dreaming!” Bess's exclamation
   made both girls look around. Bess was staring wide-
   eyed at the twins' backs.
   “You are not dreaming,” Nancy said with a smile.
   “You're only seeing double,” George added.
   “There are two Jasons?” Bess babbled. Then she
   started to laugh at herself. “I mean, he's got a twin.
   Two guys who look like that?”
   “The other one, the one who really didn't recognize
   us before,” Nancy explained, “is Ethan.”
   “Oh.” Bess paused to digest this. “Still,” she said
   stiffly, “even if he didn't know us, he didn't have to act
   so rude.”
   “Jason said he's just shy,” George said.
   “If he's expecting to have a career at an upscale
   company like Westfield's, he'd better improve his
   people skills,” Nancy pointed out.
   A couple of hours later Lisa opened the door to her
   apartment. “Didn't we turn the lights out?” she asked
   as they walked into the foyer.
   The living room wall sconces were lit.
   “Nancy came back in for her scarf, remember,” Bess
   recalled. “You probably put the lights on,” she told
   Nancy.
   “I did,” Nancy admitted with a puzzled frown. “But
   I'm sure I turned them off again.”
   “No big deal.” Lisa shrugged.
   After taking off their shoes, the four girls trooped
   through the living room on the way to bed. The light
   switch was near the display case, and Lisa stopped to
   turn it off.
   “Wait!” George gasped, grabbing Lisa's arm. She
   looked on either side of the glass front cabinet.
   “Where's my tape recorder? I left it right here, by the
   case.” Panic-stricken, she looked at Nancy. “It's gone!”
   So someone has been in here since we left! The
   thought zipped through Nancy's mind. Instinctively she
   cast her gaze around the room. Nothing seemed out of
   order. The terrace door was closed. No, she must have
   just forgotten to turn the lights off. “It can't be gone,
   George,” Nancy said reasonably.
   Bess scoffed at the very idea. “You brought it into
   the bedroom. I'm sure you did. Besides, where would
   it go?”
   Lisa laughed. “It's not like anyone could get into this
   place.”
   “Right,” George said, hurrying to the guest room. “I
   probably brought it in here with my knapsack. . . .” Her
   voice trailed off, and the sound of closets being opened
   and closed filtered back into the living room.
   A minute later a pale-faced George charged out of
   the bedroom.
   “It's not there. Someone's stolen the tape recorder.”
   4. Without a Trace
   Nancy and the other girls gaped at George. After a
   moment's stunned silence, Lisa spoke up. “George,
   how could anyone have stolen your tape recorder? No
   one's broken into this apartment.”
   Nancy wondered. “Does anyone else know the code
   to the front door?” she asked.
   Lisa replied impatiently. “No. Just me and my aunt
   and uncle—and the super of the building. I think he
   has some kind of override code for all the apartments
   in case of an emergency. The tape recorder has to be in
					     					 			/>
   the apartment. George, retrace your steps. Are you
   sure you brought it in from the car?”
   “Yes, yes,” George repeated, annoyed.
   “She did. I remember coming up in the elevator
   with it. I rested my duffel bag on top of it,” Bess said.
   “Then you just must have put it down somewhere
   else, George,” Lisa insisted, checking the living room.
   “I'll check the bedrooms again,” Bess volunteered.
   George ran her fingers through her hair. “No. No. I
   remember putting it down to look at that blow-dart
   thing in the cabinet. Then I went into the guest room.
   I'm telling you it's stolen.” She sat down heavily on the
   sofa and heaved a sigh.
   Meanwhile Nancy scrutinized the room. She, too,
   remembered George's leaving the tape recorder by the
   display case while they checked out the artifacts.
   Someone had to have been in the apartment after
   they'd left for the party. And whoever it was had left
   the lights on.
   Nancy checked the terrace door. It was definitely
   closed. She looked out. The rain had stopped earlier,
   and now the clouds were breaking up, scuttling across
   the moon. The lights of Lake Shore Drive sparkled in
   the waters of Lake Michigan. Nancy wrenched her
   eyes away from the view and noticed a small puddle of
   water on the floor by the terrace door. It wasn't much,
   and it could have blown in under the bottom of the
   door during the storm.
   She touched the door handle. To her surprise, even
   though a key was in the keyhole, the door slid right
   open. “Lisa, don't you keep this locked?”
   “Why bother? We're on the twentieth floor.”
   Just then Bess came back into the living room, her
   expression grim. “George is right, the case has just
   vanished.” Bess sat down next to George, putting a
   hand on her cousin's shoulder.
   Nancy opened the terrace door wider, and a cool
   breeze streamed in. She queried Lisa. “Okay if I go out
   here?”
   “Sure,” Lisa said glumly. “I just can't believe
   someone stole that tape recorder, George. I feel ter-
   rible, and I don't know what to do.”
   “Call the police for one thing,” Nancy suggested,
   going back to the foyer and grabbing her flats. She
   went back into the living room and put them on. “I'm
   taking a look around out here.” Nancy ventured onto
   the terrace, sidestepping the puddles. She looked up