(Paperback)

If you are unable to purchase the ad as described, then you will have this choice: kill yourself immediately or I will destroy one of these innocent people.'

Until the moment he opens the letter, New York psychologist Dr Frederick Starks has led a quiet and, so he believes, blameless life.

(Paperback)

When the body of a young female nurse is found horribly murdered in the Western State Mental Hospital, Massachusetts, there is apparently no shortage of suspects - a whole hospital of them.