Disgraced poet Ted Wallace is summoned to his friend's country manor to investigate a series of unexplained miracles.

The Hippopotamus is the story of a poet who is summoned to his friend's country manor to investigate a series of unexplained miracles. Three-time Olivier Award winner Roger Allam (Endeavor, The Queen, V for Vendetta) stars as the disgruntled, cantankerous, semi-famous poet Ted Wallace who is hired to investigate strange doings at Lord and Lady Logan's country manor, Swafford Hall. Golden Globe Winner Matthew Modine (Stranger Things, Dark Knight Rises, Full Metal Jacket) plays the stupendously rich and gregarious Lord Michael Logan. Fiona Shaw (five Harry Potter movies) co-stars as the doting mother Lady Logan. Tim McInnerny (Notting Hill, Game of Thrones) plays the flamboyant and gullible theater director Oliver Mills. The film is directed by John Jencks and produced by Jay Taylor and Alexa Seligman. This is the first Stephen Fry novel to be adapted as a feature film.