Scribes Terri Hughes and Ron Milbauer are now two for two after Universal picked up their teen horror pitch “Thirteen” for a six-figure fee, according to sources.Pitch was developed inhouse at Uni-based Perry Katz Prods. in conjunction with Hughes and Milbauer, who will pen the screenplay. Perry Katz will produce and Jill Arthur will co-produce the pic. “Thirteen” is described as a hip, horror thriller about a group of 12 high schoolers who are hooked on the rush they get scaring each other to death with elaborately told stories. When a 13th joins the group — a girl who is bedeviled by premonitions — things get out of hand as the stories start coming true. Universal execs Eric Hughes and Holly Jenkinson are credited with bringing the project into the Universal fold. In March, Hughes and Milbauer sold their comedic horror spec “Idle Hands” to TriStar Pictures for producers Andy Licht and Jeff Mueller. David Lubliner of the William Morris Agency and attorney Deborah Klein of Bloom, Hergott, Cook, Diemer & Klein negotiated the deal for Hughes and Milbauer.