Do you know who murdered Ingrid? Ingrid Ostrenga, 27, a White woman, spent Christmas Eve in Kailua on Oʻahu and never made it to Christmas morning. On December 24, 1975, she was found dead inside her own residence, the kind of quiet, familiar place that should have felt safest—until it became the scene of a killing. 
Detectives determined she had been strangled, and later retellings of the case describe an electrical cord being used as the weapon. The violence wasn’t random or distant; it was intimate and close,
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