A walk through Kensal Green Cemetery, a meat pie in the greasy spoon, a weekend away complete with flannel pyjamas - Dangerous Davies knows how to treat the woman he loves.
Detective Constable Davies has two things on his mind: Jemma Duval, the beautiful, black, hymn-singing social worker, and 'Lofty' Brock, the harmless old eccentric who drowned in the canal. To prove that Lofty's death was no accident, our hero sets out to do some undercover detective work. He soon discovers that something sinister is going on. Something that requires intuition, dedication, brilliant deduction - and a timely blow with a blunt instrument.