A documentary with laughs and a dark edge. The world of competitive tickling is even creepier than it sounds. The film is an investigative thriller that unravels the deep web of lies, threats and deceit that festers in the dark corners of the internet, and shows how online behavior can have damaging, real-world implications. Admission: $8 and the screening starts at 7:30 p.m. in the Muenzinger auditorium on Wednesday, Sept. 21. For more information: www.internationalfilmseries.com.