It all starts when Chris flirts with Chet Morton’s girlfriend. Chet’s a fiercely jealous fellow, and as a boy investigator he’s quite clever. So rather than take things up with Chris directly, he talks shit about a local drunk while dressed up as Chris then murders the poor bastard while being sure to leave scraps of Chris’ sweater and saliva.
Who investigates the murder? Why, the Hardy Boys of course. Now Dan must find the real killer before the Hardy Boys’ shoddy investigation railroads Chris into the gas chamber.