Zack would have disconnected the call, but the caller's words played on his mind; they clearly insinuated a hostile undertone. "Who are you?" he asked, his memory not reflecting the caller's voice.

Silence followed in the background; it was both irritating and suffocating. Deep lines etched his face as he listened to the silence until his patience ran out.

"Answer me. How did you get this number?" he demanded, expecting a response soon, but there was none. The call disconnected from the other end, followed by a series of sharp beeps.

He placed the phone away from his ears, his knitted brow quirked, his mind trying to ascertain who the...