That Good Night is a play by NJ Crisp, written with the intention of it being performed by Donald Sinden and his son Marc Sinden playing the central characters of the father and son. However Marc, who in 1991 had starred in Crisps' psychological thriller Dangerous Obsession, decided to produce it instead and so it became his first play as a Theatrical Producer. The title is taken from the poem by Dylan Thomas: "Do not go gentle into that good night,Old age should burn and rave at close of day;Rage, rage against the dying of the light."