Career
Six months after marrying Mowry, Campbell murdered her to collect on a $1,000 investment she owned and burned her corpse. He was also suspected in another, similar murder of Margaret Brown in 1928. Both Mowry and Brown had been shot in the head, had their bodies dumped on the side of a road, and were set on fire.
During his adult life, Campbell worked as a civil engineer and advertising executive and posed as a physician.
Using a matchmaking service in Detroit, Michigan, Campbell married several women between 1910 and 1928 although police looking into his life were never able to find any record of divorce actions. A pair of shoes at the Mowry crime scene were traced to Campbell who subsequently confessed to killing her.
He denied killing Brown and never stood trial for her murder. Police suspected he murdered some of his previous "wives".
