Boy on a Tricycle

Chief constable of Oak Hill California Arnie Crockett returns with his family from a vacation in nearby Yosemite only to discover that his close friend Tom Whiting the sheriff of Tulare County has been murdered in his home. It turns out that this killing is only one of the three that appear to be linked. Arnie and Tulare detectives fan out to hunt down the killer with Arnie's only real clue being a small old B&W snapshot of a boy about four sitting happily on his tricycle being left inexplicably at one of the crime scenes. His search leads him all through Central California from the little airport in Porterville to a clandestine pot farm in the Sequoias to a flower shop in Tulare and inevitably to an unlikely killer.