Mark S. Thornton is an inmate on death
row in the state of California..
Crime
Thornton, then 19, abducted a woman, Kellie Colleen O’Sullivan
from a parking lot, killing her and stealing her car, which he then
used to abduct his 16-year-old former girlfriend. She escaped at a
casino in Nevada.\
In September 26, 1993, searchers located the decomposed body of Kellie Colleen O’Sullivan, concealed by heavy brush, alongside a remote section of Mulholland Drive in Los Angeles County. She and her vehicle had vanished on September 14, 1993. She had been shot three times in the chest. Defendant was arrested in Reno, Nevada, and charged with O’Sullivan’s murder and other crimes. Throughout the guilt phase proceedings defendant denied that he committed the first degree premeditated and deliberate murder of O’Sullivan and that the felony-murder special circumstances were true. He also maintained he did not kidnap Stephanie C., a minor. But in closing argument, without conceding the truth of the felony-murder special circumstances, he conceded he was guilty of murdering O’Sullivan under a theory of first degree felony murder.
Address
Mark S. Thornton J63600
San Quentin State Prison Death Row
San Quentin, CA 94974
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Notes
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