Stardate 50156.2   While on an Akritirian planet, Paris and Kim are believed to be members of the Open Sky terrorist group and are arrested, tried, and convicted of planting a trilithium-based bomb. Before they know it, they are piled into a dark, impenetrable prison at the end of a mysterious chute. Kim tries to devise an escape and protect a severely injured Paris who has been stabbed by a ranting prisoner. But they realize that, like each crazed inmate, they are fitted with a clamp which causes each man to slowly kill one another. Meanwhile, Janeway tries to prove their innocence.