Disaster Cruise (Part One)

Someone is murdered on the cruise ship you're on. The doors slam shut, and you hear the PA system start up. It's the captain. "The first contestant has fallen; only 5,132 remain." The room begins to fill with gas. As gas fills your lungs, you begin to cough uncontrollably. The room starts to spin. Everything's fading together. You fall to the ground, unable to see or hear. The start of your worst nightmare begins.

First story in this three part series.