Chloe Abbington and her sister, Izzie, are enjoying huge success running their paint party business. Now, their aunt Constance has hooked them up with a gig hosting a Halloween painting party. The guests will be painting a local ghost legend who rises from the lake every Halloween. The event seems to be going off without a hitch, until Chloe overhears an argument between Constance and local Viola Finnwinkle. The next morning, Viola's body is discovered face down in the lake. And Constance is the prime suspect. The sisters believe their aunt is innocent, but if so, who's the real killer?