Hagen was a manager of a dry cleaning business in Los Angeles, California until 1996.

In 1996, he kidnapped and murdered a teenage girl from Hollywood and another from West Hollywood, and abducted a third girl. He kept his victims locked in an unplugged freezer unit with holes drilled into it for several days before killing them.

He was eventually captured by LAPD detective Harry Bosch and Sheriff's detective Jaye Winston.


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