Summary: Between 1953 and 1983, Kieran Patrick Kelly from Rathdowney, Co. Laois, preyed on vagrants on the London Common and across the London Underground Tube. In fact, he didn't just prey, he murdered. The question is how many? It’s said he could have murdered up to 31 people. Could this be true? Robert Mulhern attempts to unravel this curious tale (2016)