There’s an epidemic going around Argentina, and there is no effective antidote: demonic possession. The citizens have long internalized the seven rules of mitigating evil. The rest, they say, is up to the bureaucratic machinery. But when the two brothers Pedro and Jimi find the body of a possessed person bloated beyond recognition in a rundown house, they sense that none of what they do will make much difference. After Terrified, which, well, terrified our SLASH audience in 2018, Argentinian director Demián Rugna tops up his filmography with this whopper of a horror flick—When Evil Lurks is an excellently crafted, infinitely shocking study of civilization’s demise, cast in images of brute power. One of the most uncompromising and essential genre movies in recent memory.