“Captive” (** out of four) was a thinly conceived horror comedy about a group of stoners (Scout Taylor-Compton, Tasie Lawrence, Michael Lovato, and others) who break into a house for a weekend of partying but unfortunately find a man (Cody Frank) chained in the basement who sets out to kill all of them. Not bad by the admittedly low standards of these things, with some decent kills and touches of dark wit, but undercut by annoying characters and routine framework.