Dokuhaku Suru Universal Yoko Mercator Egg Man

A psychopathic killer known as Egg Man has been apprehended, imprisoned, and is awaiting his death sentence. Karen, a brave and beautiful policewoman, is assigned to the "Egg Man" case to locate the missing corpse. Egg Man encounters his cellmate, Prisoner 205. Who is Prisoner 205? Is he another inmate awaiting execution or an android used by the police to gather information about Egg Man and the corpse? Who is truly manipulating whom?