Adapted from a classic West End farce, Things Happen at Night features a classic cast of British comedy stars trying to banish a mischievous, poltergeist spirit from a stately home. Wilfred Prescott (Alfred Drayton) enlists the help of an eccentric psychic researcher (Garry Marsh) to purge the spirit from his possessed daughter so that she can marry the son of wealthy businessman, Vincent Ebury (Robertson Hare). When a shifty cockney insurance salesman (Gordon Harker) visits the house, the spirit erupts into a frenzy of poltergeist activity leaving a trail of comic encounters in its wake.