On Halloween, you can catch the premiere of the English-language rock-horror musical Night Quintet at the Théâtre Marni in Ixelles. For the author and composer of the show, the premise of which is reminiscent of an escape room, this was his first foray into the genre. "Five strangers wake up in a room. They don't know why. They are being manipulated by a psychopath who is telling them what they have to do to survive."