Unknown Contact at 2:17 a.m.

At 2:17 a.m., Lucas’s phone vibrated. Unknown Contact Are you awake? He frowned.

Everyone he knew was asleep, and his phone had no signal in his apartment.

Still half-dreaming, he typed back. Yeah. Who is this? The reply came instantly.

You tell me. Lucas sat up. The room felt colder than it should have. His phone buzzed

again. Check your front door. His heart thudded. Slowly,

he stood and looked down the hallway. The front door was closed. The locks were still

in place. No one’s here, he typed. Three dots appeared. Disappeared.

Then: I didn’t say knock. Before he could respond, his phone’s screen