Black and Blue

What happens when one morning you don't wake up in bed? But instead you wake in a jail cell, you have no idea you got to. To make matters worse, what happens hen you don't remember who you are?
Six prisoners wake up to find they are being kept by the demonic Jailer, all they know is that they are all connected somehow, and must face life or death challenges to make it out alive.
Every challenge they complete they gain back one of their memories.

But who will they lose along the way to discover their identities?