If you like your horror cinema to be easily classified—the common categories include “psychological” vs “supernatural”, or “quietly creepy” vs “full of jump scares”—you might be intrigued by the Malayalam film Bhoothakaalam, about a middle-aged woman and her son battling personal demons. In tone, setting and characterisation, this is a subdued work rather than one of explicit terrors. Asha (Revathi) and Vinu (Shane Nigam) seem afflicted by a sadness, the causes of which aren’t spelt out, though we grasp things about their past and present—a husband/father who died, leaving behind unhappiness and debt; a boy who misses him and sees his mother as clinging; a woman who can’t conceive of life without her son.