Sean Hart, along with several other students from Flyer High School, has gone missing. The police are working around the clock to find the students but, so far, have made little progress. Sullivan believes an abandoned house used by teenagers for a "test of courage" is somehow linked to the disappearances, but there's a problem with his theory – the house is empty. Can you help Sullivan crack the mystery and bring the missing kids home before someone else vanishes? Sign up today to find out!