Open this photo in gallery: TIFF’s 48th edition runs Sept. 7 to 17 this year.Chris Young/The Canadian Press Movies featuring summer-camp killers, ancient demons, infrared action, and identical – and potentially incestuous – twin brothers lead the Midnight Madness slate at this year’s Toronto International Film Festival. On Thursday, programmers announced the lineup for the perennially popular program highlighting unconventional genre cinema, and which in recent editions has launched everything from James Franco’s 2017 meta-comedy The Disaster Artist to last year’s Nazi-killing sensation Sisu. Opening the Midnight Madness selection for TIFF’s 48th edition, which runs Sept. 7 to 17, will...