Nick wrapped his arms around her, pulling her body to his. When his lips touched hers she reached for his neck, grasping frantically at his wavy hair. Nick pressed her against the wall, kissing her cheek, her jaw, her neck. She’d do whatever he wanted her to, stay or go. She’d never believed in fate, thought it was something for the weak-minded to find comfort in. But in that moment, she knew that fate did exist. Because Nick—this Nick—was her fate.
Just then the house shook violently. Nick broke away, bracing himself against the wall with one arm, the other still laced behind Josie’s back. It felt like an earthquake, or at least how Josie imagined an earthquake would feel. Only it didn’t weaken. After a few seconds, the shaking was getting stronger, so violent Josie had a hard time standing upright.
Jo flung the bedroom door open. “Something’s wrong.”
Josie and Nick ran into the room. The portal had opened and on the other side, Josie could see Penelope and her dad standing in front of the large X-FEL rig in their basement.
Dr. Byrne had already come through the portal. She stood in the middle of Jo’s bedroom, a look of panic on her face.
“I didn’t know,” she said to Josie’s mom. “I thought my husband had Jo. I thought he’d be here when the portal opened. I . . .” She looked up at Josie. “I didn’t know what to do.”
The rumbling intensified. Inside the mirror, a massive hole was forming. The thick substance of the portal swirled around it, picking up speed as the hole grew larger.
Josie grabbed Dr. Byrne by the arm. “What’s happening?”
“I calibrated the X-FEL to hold the portal open,” Dr. Byrne said. “Until I could figure out what happened to my daughter.”
“To hold it open?”
Dr. Byrne nodded. “Only it’s growing too quickly. The gravitational field is accelerating beyond the bounds of its force.”
Josie stared at the widening hole in the portal. “At this rate, the field will collapse in on itself.”
“Isn’t that what we want?” Nick said. “To close the portal?”
Josie shook her head. “This will close the portal, all right. And destroy both of our worlds in the process.”
Josie’s mom staggered to her feet. “Oh dear God.”
“Can we stop it?” Josie said. “Shut the laser down?”
Dr. Byrne shook her head. “It’s too late. Turning off the laser won’t stop the process.”
“Wave interference,” Josie’s mom said. “A wave-interference pattern will cancel out the beam.”
Dr. Byrne’s face lit up. “If it’s of equal strength, it should disrupt the field completely, breaking the portal for good.”
“Equal strength?” Nick said. “I don’t suppose you’ve got another X-FEL lying around the house?”
Josie shook her head and smiled, remembering her science experiment in AP Physics. “But we’ve got some mirrors.”
4:10 P.M.
Josie’s mom passed through the portal first to explain to her husband and Penelope what they needed. Penelope dashed upstairs and Josie watched with a fluttering heart as her dad lifted her mom into his arms and hugged her.
On her side, Jo and Nick had retrieved the large mirror from above the fireplace downstairs and lugged it into Jo’s bedroom. Once Penelope was on the other side with a similar mirror, Josie began directing their placement.
It had to be exact, which was easy when you had a variety of instruments with which to measure distance, angles, and other environmental variables. Not so easy when you were eyeballing it in a room that was literally being shaken apart.
Dr. Byrne and Nick struggled to keep the angle steady, reflecting the beam of the laser directly back onto itself. Penelope stood behind the X-FEL, her mirror catching the split photons as they passed through the portal. Together, it should be enough to create a powerful interference pattern that would disrupt the portal.
If only they could keep the mirrors from moving.
“Higher,” Josie yelled. The rumbling was so intense she could barely hear her own voice. “Ten degrees.”
Jo’s room was literally falling apart around them. Chunks of plaster loosened by the violent shaking crashed to the floor. The bookcase pitched forward, falling face-first onto the bed like a diver doing a belly flop. The window rattled so fiercely she thought it might explode.
“It’s not working,” Jo screamed.
Josie didn’t lose focus. She stood right next to the mirror. They were so close. “Just an inch more.”
Suddenly the shaking stopped. The mirror had hit its target and Josie watched with rapt attention as the hole in the middle of the portal fluctuated, then rippled as the particle waves began bouncing against one another. Dr. Byrne and Nick held the mirror firmly, the angle perfect.
In an instant, the hole in the portal was gone. The surface blurred and the image of Josie’s parents distorted. The portal was closing. This time for good.
“Let’s go,” Nick said, grabbing her hand.
“Are you sure?”