Oliver cocked his head slightly at the faint noise he heard coming from inside the room. He could have sworn someone had called for help. But the voice had been tinny, and distant. It was probably his exhaustion catching up with him. He was probably starting to hallucinate. He knew from experience that sleep deprivation could do that and worse.
But he heard it again, and he took a step toward the door, hesitating for a second before turning the knob and pushing it open. The room was completely dark, no sign of anyone around.
Except for the loud thump that came from behind one of the closed morgue drawers. His heart began to beat faster as he flipped on the light, striding over to the cabinets and pausing as he waited to hear another noise again so he could figure out which drawer it was coming from.
I'm going crazy, he thought, when he was met with silence.