Scariness ruled awhile this afternoon at WonderCon in Anaheim. Blumhouse Productions screened a new trailer for Insidious: Chapter 3, in which the psychic played by Lyn Shaye explains to a teenage girl (Stefanie Scott) why it’s probably better if you don’t try to contact and talk to the dead. The trailer’s pretty convincing for the Focus Features release that opens June 5. Dermot Mulroney and Angus Simpson also star. Franchise creator Leigh Whannel wrote and directed.