Wicked Little Letters (out Mar 21) is not particularly deep or complicated (there’s a lot of repetition) but the actors elevate the material. Set in 1920s England, a series of filthy, profanity-laden letters have been sent to the home of a middle-aged religious woman (Olivia Colman) and she suspects her next-door neighbour (Jessie Buckley) is responsible. Framed as a dark comedy, I had fun with this (villainous characters really get under your skin). Grade: B+.