Former LAPD officer Christopher Dorner was heavily armed and seeking revenge for losing his job. Dorner murdered four people before taking his own life during a fiery standoff in the San Bernardino Mountains.
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In the beginning, it was a mystery: A double murder in Irvine - the victims were Keith Lawrence and his fiance Monica Quan. Irvine police had no leads.
But two days later, there was a break in the case: LAPD equipment found in a dumpster in National City, along with a notebook with the names Dorner and Evans written inside.
READ ALSO | Deputy shot during Christopher Dorner manhunt recalls frightening story of survival
Deputy shot during Christopher Dorner manhunt recalls frightening story of survival
Detectives called LAPD but were told no one by the name of Dorner currently worked there, but there was an Evans - Sgt. Teresa Evans, who did remember a Dorner working there years ago. He had been fired.
She described an astonishing theory in which Dorner might have been trying to seek revenge against Randy Quan, who he blamed as the reason for him being fired. Quan's daughter was one of the Irvine murder victims.
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Then an online manifesto was discovered in which Dorner listed several people with LAPD who he wanted revenge against.
WATCH NOW | ABC7 Los Angeles 24x7 Streaming channel
ABC7 retraced Dorner's deadly trail in a special documentary, "True Crime: The Manhunt for Christopher Dorner." Don't miss the special on ABC7 or wherever you stream.
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