A terrible confession
In an isolated room in Hollowpines, an infamous psychiatric hospital, Joe Sinclair is confessing to a violent murder.

An impossible crime
Locked away, Joe couldn't possibly have killed the man, so how does he know so many of the horrifying details?

A detective at her limits
Suspended after a colleague was stabbed on her watch, DC Abby Fox has only just returned to work. But at Hollowpines, she must find out what really happened and how exactly Joe is involved.

Is he to blame, or the only one who can stop the killer?