The House by the Lake is a 1956 British stage thriller in three acts, by Hugh Mills.

[1] The main characters are Maurice and Stella, a brother and sister who plot to murder their unlikeable brother, Colin.

[2] The other characters include Maurice's wife, Janet, Colin's long-suffering wife, Iris, and Colonel Forbes, a neighbour.

[3] It premiered at the Prince of Wales Theatre, Cardiff[4] before transferring to London's West End, where it ran for two years, starring Flora Robson and Andrew Cruickshank;[5][6] and has since become a staple of amateur dramatics.

[7] The play, directed by John Fernald, opened at the Duke of York's Theatre on 9 May 1956, with the following cast: The production was designed by Fanny Taylor.