...  convicted of 2008 Barstow double homicide had history of mental illness Filed under: drug treatment programs in covina WEST COVINA >> The warning signs had been present long before Collin Lee McGlaughlin fatally shot a teenage couple, execution-style, inside an abandoned Air Force bunker just outside Barstow on Jan. 5, 2008. And the warning signs were glaring … Read more on Los Angeles Daily News Tags: collin lee mcglaughlin, west covina, treatment programs, drug treatment, daily news, mental illness, los angeles ...