“I’m more sure than ever,” Emma whispered, her mind racing. “I’m positive Lili cut the light, too—she ran upstairs to grab her phone right before it fell. And you should’ve seen the way both the Twins stared at me before I passed out.” Goose bumps covered Emma’s flesh as she pictured it again. “They looked capable of anything.”

My mind flashed back to the murderous look in Lili’s eyes on the night of the train prank and the text she sent from the ambulance promising revenge if anything was wrong with Gabby. Thank God Emma had stepped aside before the light crashed on her head. She’d been inches away from joining me here in the in-between.

Outside, a flock of birds lifted off from a knot of bushes beneath the nurse’s window. Emma paced the floor. “It makes so much sense,” she whispered. “Gabby and Lili are Twitter and Facebook masters—they could’ve easily hacked on to Sutton’s page, read that first note from me, and sent one back asking me to come to Tucson and wait at Sabino Canyon. They were with Madeline the night she hijacked me at Sabino and dragged me to Nisha’s party, too. Who’s to say Gabby and Lili didn’t suggest the whole kidnapping thing?”

Ethan moved the chair back and forth, the caster wheels squeaking, not saying a word.

“And they’re such gossip hounds,” Emma went on, pausing by a big poster titled WHAT TO DO IF YOU’RE THE VICTIM OF ASSAULT. “It wouldn’t look suspicious for them to skulk around, spying, listening in. And both of them were at Charlotte’s sleepover last week. They could’ve snuck down and strangled me without tripping the alarm.” All of Emma’s nerves snapped. She was onto something big—and terrifying. “Lili and Gabby were with Sutton the night she died. It has to be them.”

Ethan’s Adam’s apple bobbed as he swallowed. “So how do we prove it? How do we nail them?”

“With your phone.” Emma held out her hand. Confused, Ethan dropped it in her palm. Emma pulled up the home page for Twitter and looked again at Gabby’s and Lili’s tweets. On August 28, they were innocuous and random: Love my new Chanel oil blotter! And What are you wearing to Nisha’s party? I was thinking of breaking in my back-2-school purchases. And Avocado burger at California Cookin’, yumness!

They sometimes shot off thirty tweets an hour. But on the thirty-first, neither of them had tweeted at all. “That’s odd,” Emma said, sinking back to the cot. “I figured they would’ve bragged about shoplifting with Sutton that day.”

Ethan sat beside her as Emma scrolled to the most recent tweet. At ten this morning, Gabby had tweeted she’d aced the math test she never studied for.