This week on New Detectives - For some killers, once is never enough. Often, cold and calculated serial killings are more difficult to solve than violent crimes of passion. For investigators, the challenge is steep when the killers murder by numbers. #NewDetectives #ColdCase #UnsolvedMysteries #Detective The New Detectives content owned and licensed from New Dominion to Little Dot Studios. For all questions, please contact owned-enquiries@littledotstudios.com

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