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Hollywood producer and serial rapist David Brian Pearce was sentenced to 146 years to life in prison Wednesday for the tragic drug overdose deaths of a model and her friend ... in addition to other heinous convictions.

Pearce was convicted of murdering 24-year-old Christy Giles and her 26-year-old friend Hilda Marcela Cabrales-Arzola in the first degree back in February. According to ABC7 Los Angeles , further investigation also uncovered rapes he committed against several women over more than a decade -- he was also convicted of multiple counts including forcible rape, sexual penetration by use of force, rape of an unconscious person, and sodomy by use of force. Getty

Prosecutors said Pearce reportedly met Giles and Cabrales-Arzola at an after-hours rave an

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