Capell's credibility has been seriously questioned because his only source was columnist Walter Winchell, who in turn had received much of his information from him; Capell, therefore, was citing himself.[56] His friend, LAPD Sergeant Jack Clemmons, aided him in developing his pamphlet; Clemmons became a central source for conspiracy theorists.[57] He was the first police officer on the scene of Monroe's death and later made claims that he had not mentioned in the official 1962 investigation: he alleged that when he arrived at Monroe's house, her housekeeper was washing her sheets, and he had "a sixth sense" that something was wrong.[57]