Welcome to The Crime Time Pod with Mary and Helen. We'll be telling you the story of some big true crime cases that rocked the world. Every week - off air - we'll pick a topic and each of us has to go away and prepare a case to share. This week's theme - Stone Cold.

In Episode 2, Mary will be sharing the 1973 case of the murderer dubbed 'The Saturday Night Strangler', and Helen will be sharing a mysterious case from Northern Ireland of a man who named himself 'Peter Bergmann' ... but who was he? 

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