Penelope opened her mouth as if to protest, then snapped it shut again. Apparently, it was too valid a point to argue.

"I know you don't trust me," Josie repeated for emphasis. "Or like me very much, for that matter. But I need your help."

"I'm only good at science and math," Penelope said. "If you need someone to do your homework in anything else you're asking the wrong girl."

"I don't need help in science or math," Josie said with a dry laugh.

Penelope's dark eyes flashed toward Josie just for an instant before resting on the table again.

"But I do need your help," Josie continued.

"Fuck you," Penelope said. Her voice was breathy and hoarse, and barely above a whisper.

Josie wasn't sure what she expected by way of a reaction from Penelope. Curiosity? Interest? Friendship? She didn't know. But not that.

"Huh?"

Penelope raised her eyes slowly, deliberately. "I said, 'Fuck you.'"

"I'm not playing, Pen," she said, using the nickname for her old friend. "I really need your help."

"Don't call me that," Penelope said. She wasn't whispering anymore. "We are not friends and I don't care what you do to me; I'm not helping you." Penelope snatched her bag off the ground and started for the door so quickly Josie barely had time to react.

Thankfully Josie was closer to the door. She headed Penelope off and wedged herself in front of the only exit. "Please, just hear me out."

"What do you want from me?" Penelope's voice cracked. "Are you going to threaten to cut our access to the Grid since my dad lost his job? Fine. Do it. I'd rather be eaten alive by the Nox than have to be your bitch for one more day." Her eyes welled up with tears.

"Jo did that?" Josie said.

"You did that," Penelope corrected. She pulled the sleeve of her sweatshirt across her cheeks.

"I'm not Jo."

She had already resolved to tell Penelope exactly what was going on, but she was hoping to do it at the warehouse or in front of the mirror right at one minute to four to prove to Penelope that she was telling the truth. But Penelope's violent reaction meant she'd have to play it from the hip.

"Have you lost your mind?" Penelope said.

Josie slowed shook her head. "I can't explain it now, but Jo and I sort of switched places."

"Twins?" Penelope sounded dubious.

"Um, kinda."

"I don't understand."

"I know." The warning bell rang. Any minute the room would start filling up for fourth-period physics. Josie needed to hurry it up. "Look, I can't explain it here, but I'm not Jo Byrne. You remember physics the other day, right? Did I sound like Jo?"

Penelope's eyes were still red and puffy, but she'd stopped crying. "Yeah, no. You don't know anything about physics."

"Jo doesn't know anything about physics," Josie corrected her.

"Riiiiiight," Penelope said slowly, like she was placating a crazy person.

"And I know you don't trust her, or me, for that matter, but you know Nick Fiorino, right?"

Penelope nodded.

"Well, he trusts me."

Penelope laughed. "Yeah, right."

"Ask him. After school. Find him and ask him."

Penelope shrugged. "Whatever." Not exactly a confident reassurance she was going to do what Josie asked.

"Pen," Josie said, grabbing Penelope's arm. "Please. Just ask him, okay?"

Penelope tilted her head. Her eye drifted down to Josie's hand, which gently gripped her arm, then back up to Josie's face.

"Fine," she said at last, just as the door opened and students poured into the room. "I'll ask him. But don't count on my help, okay?"

"Okay." Josie let go of her arm. "Thank you."

Now it was up to Nick.

THIRTY-THREE.

2:50 P.M.

JOSIE HAD A HARD TIME KEEPING JO'S BMW AT the speed limit as she raced down Route 50 to Annapolis. She'd managed to keep her mind occupied for most of the school day, focusing on boring classroom lectures and trying not to let her mind wander to inappropriate thoughts of Nick. He'd sought her out after school, just to make sure she was okay and knew how to get to the hospital and hadn't changed her mind about having some company on the trip because he could still bail on track practice and come with her. . . .

Josie sighed as she eased up on the accelerator and signaled for the off-ramp. She couldn't allow herself to have these feelings for Nick. No way. She had to stay focused on her mom and finding a way to get them home. Besides, it wasn't like Nick was going to come back with her. Once she created another portal, she and Nick would never see each other again. She had to remember that.

Had to.

Thoughts of Nick vanished the moment Josie turned her car into the parking lot for Old St. Mary's Hospital. A military facility housed in an old naval hospital outside Annapolis, it was a typical mid-Atlantic facade of brick and white columns, with parallel wings stretching out from either side. Three stories of barred windows gazed out onto the parking lot, thin slits in the moldering brick walls that looked more like the ramparts of a castle than a hospital.

Josie could almost feel the despair radiating from the hospital. Aside from a half dozen cars in the parking lot and a new wheelchair ramp added to the stone steps at the entrance, the building looked abandoned. She'd pictured it as more of a bustling hospital, doctors and orderlies rushing around, an ambulance parked out front. Instead, the only movement was the rippling of leaves from the large elms that flanked the south side of the building.

As Josie stared at Old St. Mary's, she tried to imagine her mom, confused and scared, staring out onto a strange world wondering if she'd ever see home again.

Nick had tried to warn Josie about what she might find when she got there. "Josie," he had said in that straightforward way. "You need to be prepared for what you might find."

Josie had looked up sharply. "Prepared?"

It was true. For six months she'd been locked away while doctors continually told her she was not in her right mind. Josie pictured Jo and Mr. Byrne visiting her. Her mom would have known right away that this wasn't her family, which would only have strengthened the claims that she was nuts. Maybe after six months she was beginning to believe it?

Or worse. Maybe her ordeal had changed her. Permanently.

Josie pushed her fears out of her mind as she walked up the front steps of the hospital.

The first odd thing about Old St. Mary's struck her the moment she walked through the door. Instead of a receptionist, two military guards greeted her. One sat at an enormous desk surrounded by security monitors. The other stood behind him, shouldering an automatic weapon. Neither of them looked at her.

"Do you have an appointment?" the seated guard asked. His eyes never left the monitors, and though Josie couldn't see what they showed, she watched his eyes bounce furiously around from screen to screen.

"Josephine Byrne," Josie said by way of an answer.

The guard clacked away at a keyboard hidden beneath the desk. Within a few seconds, a printer whirred into action. His eyes still fixed on the security monitors, he leaned back and whipped a preprinted ID badge out of the print tray, affixed an alligator clip, and handed it to Josie.

"Wear the badge at all times. Lieutenant Maynes will escort you back," he said.

The armed guard nodded. "This way."

The guard led Josie through a maze of corridors. He walked quickly, apparently uninterested in whether or not Josie managed to keep up. Josie felt like they'd walked in circles before they stopped abruptly at a glass security door. The guard placed his hand flat against a pad on the wall, and after a few seconds, a loud beep sounded from the door and it slid open.

A handprint security door in a hospital? That didn't seem right.

The guard, however, didn't enter through the open security door. Instead, he stood aside and flanked the doorway. She glanced at him but got nothing. He stared straight ahead of him at the wall.

"Am I supposed to go in?" she asked.

Silence.

Really? Not even a nod of his head? Sheesh, what was this place?

Josie took the hint and passed through the door. She found herself in a stark white room shaped like a giant semicircle, with eight or nine of the same glass security doors facing inward at her. No desk. No doctors. Just doors. She turned back to the guard, but the door immediately slid closed. Josie could see the guard outside, at attention. Not looking at her.

"Miss Byrne?" a voice said. Josie spun around and saw a woman in a white doctor's jacket smiling at her broadly. She was young, maybe thirty, with a short, dark bob and narrow brown eyes that seemed to disappear beneath the weight of her smile.

"Yes."

"I'm Dr. Cho," she said, her voice light and airy, like the way grown-ups speak to toddlers. "I've been working with your mom for the last few months."

"Oh."

"She's been remembering a little bit more as of late, so I'm glad you've decided to come back. Maybe it will help her reconnect to her old life."

Josie smiled grimly. Dr. Cho's words held more truth than she knew.

"Let's see how your mom is feeling today, shall we?" Dr. Cho said. She placed her hand lightly on Josie's back and guided her toward the far side of the room. Like with the entrance, each individual door had a scanner pad in front, and as Dr. Cho approached one, she placed her hand flat against the pad. As before, a loud beep preceded the door sliding open, and Dr. Cho's smile deepened as she led Josie into the room.

It was a cross between a hospital room and a prison cell, the best Josie could figure. A bed with wrist and ankle restraints clearly visible stood on one side. There was a desk and a chair on the opposite side, and a small alcove in the back with toilet and sink. There were no windows, only overhead lights reflecting off the stark white and metallic surfaces in the room.

And it was empty.

"Dr. Byrne?" Dr. Cho said in her jingly voice. "Dr. Byrne, I've brought someone to see you."

No response.

Dr. Cho stepped into the alcove and crouched down. Josie could hear whispering. Then she stood up and held out her hand. From the space in the back of the alcove hidden by the wall, Josie saw a pale, shaky hand in Dr. Cho's.

Josie's mom shuffled into the room, head down, with lank, dirty hair obscuring any traces of her face. She didn't look up. She didn't ask any questions. Just shuffled her slipper-clad feet forward without lifting them off the floor. She wore a light blue hospital gown that was at least two sizes too big. It hung off one shoulder, exposing the bony joint and pale white skin. Sickly pale. Her skin looked as if it hadn't seen the sun in years.

Josie had to fight to keep her face from reflecting the horror she felt. Her mom looked completely broken. Josie wanted to grab her and make a run for it, but she was helpless in that guard-infested hospital. And the thought that she'd have to leave her mom there made her want to cry.

Dr. Cho guided Josie's mom to the bed. She stood in front of it but didn't sit down until the doctor placed a hand on her shoulder and gave her a gentle nudge. Then she tentatively lowered herself and sat forward on the edge of the mattress, her toes just touching the floor. As she sat there, Josie could see how thin she was. Her knobby knees looked too large for her legs, and her mom's athletic frame, which had always been fit and healthy from her morning runs, now appeared frail and fragile, as if her bones would snap in half if Josie hugged her too hard.

Even worse, Josie caught sight of thick, purple bruises encircling her mom's wrists and ankles, and up and down her arms and legs, the remnants of deep cuts. Like long, harsh claw marks.

Her stomach lurched. Josie knew those marks only too well.

"Dr. Byrne likes to cut herself," Dr. Cho said. She watched Josie's face keenly. "So we have to keep her restrained. For her own good. Isn't that right, Dr. Byrne?"

Josie's mom gave an almost indiscernible nod but said nothing.

"I see," Josie said. Suddenly, Dr. Cho's sunny smile seemed ominous. Her mom wasn't cutting herself. Josie would recognize those marks anywhere. They were exactly the same as the ones on Josie's arms: red, jagged, and sliced deep into her flesh. They were from a Nox attack. How could she have gotten them in here, and why was Dr. Cho lying about it?

"Your daughter's here to see you," Dr. Cho said. "Don't you want to say hello to your daughter?"

"That," her mom said slowly, without looking at Josie, "isn't my daughter."

Her voice was parched and raspy, but Josie recognized it right away. The inflection, the intonation.

"Mom?"

Her mom flinched. Visibly. Slowly she raised her head and the dirty locks of hair fell away from her face, exposing the deep blue eyes Josie knew so well. There was fear in those eyes, and confusion. "Josie?"

Josie threw her arms around her mom's neck. "It's me," she said in a barely audible whisper. Her mom wouldn't know what was going on, and Josie needed her to maintain the illusion as long as possible.

"Excellent!" Dr. Cho cooed. "I'll leave you two alone for a bit." She turned toward the door. "But not too long. We don't want to overdo things." Her megawatt smile breezed out of the room, and the door slid shut behind her.

"Josie?" her mom breathed immediately. Her eyes darted around Josie's face. "How? Where?"

Josie hugged her mom again, tighter this time. Emotion clogged her voice and she fought to keep back the sob threatening to erupt from deep within her. This was her mom. Finally.

"I've seen you," she said, her voice tight with emotion. "In my dreams. You'd be at home doing your homework just like nothing had happened."

The nightmare Dr. Byrne had. At exactly 3:59. Dear God, they were sharing visions of each other's lives, just like Josie did with Jo. That must have been even worse for her mom than being tortured by the Nox.

"Mom, I'm so sorry."