A vacuum cleaner haunted by a ghost is the kind of one-liner which can draw in a festival audience looking for a little light-hearted fun to fill the time slots available between the “heavier” films which require much closer attention. A useful ghost, the debut feature of Thai filmmaker Ratchapoom Boonbunchachoke being screened in the world cinema category at the 30th International Film Festival of Kerala (IFFK), even appears so in the initial hour. Until, the film becomes something more, with strong undercurrents of Thailand’s contemporary political history.