Karen Clarke wakes suddenly to the piercing shriek of her clock radio. It is still dark, the green glow of the digital numbers read 03:18. She shuffles to the bathroom, switches on the light and recoils in horror at the reflection in the mirror, she has been badly beaten but apparently has no memory of how! She collapses to her knees and throws up into the toilet.

Something metal hits the porcelain. The confused Karen reaches in and pulls out a key. A very strange locker key ...Karen works in a mortuary - preparing bodies for pre-funeral viewings and on this particular morning all seems relatively norrnal until a corpse sits up, grabs Karen's wrist and curses her for “What she has done!”. And that's just the beginning.

Ugly, twisted creatures lead by the monstrous Needlelooth seem to be stalking her every move, plaguing her already bizarre existence. Even in her own home she feels their malevolent presence. And every time she wakes, she has been beaten. Her only reprieve from this hellish existence is when she sleeps. For the moment Karen Clarke falls asleep she awakes as Susan Hamilton - a normal girl with a normal life and a normal job. Susan believes Karen to be her nightmare alter ego. Karen believes Susan to be her dream of a better life. But which is the real world and which is the dream?

As strange occurrences begin to infiltrate Susan's once normal life, the boundaries between conscious and subconscious become increasingly blurred. But is she prepared to face the truth? The truth held within her own mind. The truth unlocked only by that strange locker key.