Karl wakes up in a locked room, a prisoner once again. But this unfamiliar place is no penitentiary. And this time he volunteered to be here. A tragic accident took everything that was dear to Albert. Now everybody's favourite twin sits in his wheelchair and contemplates the ultimate sin. Dagmar was taken in by the church as a baby and has grown into a young woman with a ferocious appetite – and it's not for food. Tobias is the other twin, the also-ran whose greatest talent lies in impersonating his brother. Tobias' skills are less developed when it comes to killing. But make no mistake – he'll catch on… Four different people. Four different stories. One murderer. Maybe their lifelines crossed years ago.