Helen's most personal case yet as she investigates the shocking and unexpected murder of a close friend found cocooned in plastic. It looks like it was a tragic accident - a sex game gone wrong.

The investigation soon threatens to expose Helen's private life and she has to make some tough personal choices along the way, as she hunts a twisted and elusive killer, who is swiftly racking up more murders.

As Helen closes in on her prey, a shocking truth is revealed - these murders are part of a calculated attempt to bring Helen down . . .