In Deep

S3, E4: Starring Caroline Quentin. Human remains are found in a lake, together with a hipflask engraved with the name Paul Cochran. A formerly successful architect, now in a rehab institution, Cochran is extremely agitated and makes little sense. Is he faking madness? Or does he have good reason to be frightened? To unlock the case, Janine must learn to understand the pecking order of male friendships and rivalries.