premise: Things Happen at Night is a 1947 British supernatural ghost comedy film directed by Francis Searle and starring Gordon Harker, Alfred Drayton, Robertson Hare and Gwynneth Vaughan. The film is based upon a stage play, "The Poltergeist", by Frank Harvey Jnr.
hypothesis: Frank Harvey Jnr. wrote Things Happen at Night .
reason: It is based off of the play, but he did not actually write it. The system is unable to figure out one way or another.