Leeds, 1977. A chill lies over the city: sex workers are being murdered by a serial killer they are calling the 'Ripper', the streets creeping with fear.

Tough, sharp, but tender, Maureen runs Rio's, a clean, discreet brothel in the city. She's a good boss who takes great care of her workers - especially her best girls, Bev and Anette. The Ripper may be terrifying girls who work the street, but at Rio's the girls seem safer.

But when Bev's sweet-natured son is found beaten to death, a figure from Maureen's past, DS Mick Hunniford, shows up at her door. Does his arrival herald danger or salvation? And who can Maureen really trust?