Harry O'Connor, better known as Badger, is back working full-time with the London Metropolitan Police Force. When a young woman is found drowned with a footprint bruise on her back, Badger is assigned to head up the team to catch the killer. The Woodmore twins run the mysterious Connect Healing and Wellness Retreat, a place that styles itself as a haven for the rehabilitation of troubled young people. As Badger uncovers that the murdered young woman was a resident at Connect, the Woodmore twins come under fire as their past is unearthed and as more bodies start to pile up. Badger is forced to send Sofia Puccini, a feisty young policewoman, undercover into Connect to investigate further, with the potential for disaster looming large as the case balances on a knife edge. When Emily Meadows is kidnapped, Badger has to draw on all his resources, from his Irish Traveller connections to Emily's father, to try to save her before the killer strikes.