“Please,” Emma whispered as Lili loomed close, her body weak from Lili’s choke hold and the lack of oxygen. “Please don’t hurt me.”

“Say goodbye,” Lili growled.

Emma closed her eyes and pictured all the people she would say goodbye to. Ethan—she’d never even gotten to kiss him. She never realized exactly how much she wanted to kiss him until right now. Madeline, Laurel, and Charlotte—no more laughing with them, no more gossiping. It struck her, suddenly, that these were people she knew in Sutton’s life, not hers. Was there anyone who would miss her from when she was Emma? Who did she have who would mourn her? Even Ethan couldn’t grieve for Emma in public. He would have to know her as Sutton Mercer, not Sutton’s secret twin. And Alex didn’t know she was pretending to be Sutton, wouldn’t realize that it was Alex’s friend who was now dead.

Sutton’s face, a face so identical to hers, flared in her mind. She’d wanted to know Sutton more than anything else in the entire world. And she’d wanted to solve this for her sister, to put this horrible crime to rest. Who knew what would happen now. I’m sorry, Sutton, she thought. I tried my best.

I know, Emma. I tried to place my hand over my sister’s to comfort her, to let her know I was right there.

The cave was tomb-silent. Lili leaned down so her lips were next to Emma’s ear. And then, quietly, joyfully, she whispered, “Gotcha.”

Her hands went slack from Emma’s neck. When Emma opened her eyes, Lili was giggling hysterically. “Gotcha!” she cried again, louder this time, as though she were calling to someone.

Rocks began to shift, and suddenly, the big boulder that had walled Emma in disappeared. A bright flashlight shone into their faces. “Gotcha!” another voice cried from outside the cave. Emma shielded her forehead and stared at the willowy blond. Was that . . . Gabby?

Emma scuttled out of the cave. As soon as her feet hit solid ground, Gabby cuffed her playfully on the shoulder. “You were so scared! We got you so good!”

Madeline, Charlotte, and Laurel appeared behind Gabby, contrite looks on their faces. Emma’s heart raced, and she gasped for air. “Did you guys know about this?”

Laurel smiled sheepishly. “We found out at the dance.”

Emma gaped. She turned to Lili, who was climbing out of the cave, then back to Gabby. She tried to settle her nerves with a deep breath, but it caught in her throat. “How long had you been planning this?” she sputtered.

The Twitter Twins exchanged a glance. “Lili and I scoped this place out a couple of weeks ago on a camping trip with our dad,” Gabby admitted. “And then when you invited us to go camping, we put everything into action.”