Extracurrikiller Activity (2013)

Within the walls of a typical suburban high school, a small group of students assembled to take part in a film club. Little did they know their time was almost up. After one of the students is discovered dead in a bathroom, and another goes missing, the remainder of the group bands together in an attempt to find their missing friend and solve the murder mystery. But as they spread out across the school in their search, they might not like what they find... or, what finds them.