Seven Days is a three-act play written in 1909 by Avery Hopwood and Mary Roberts Rinehart.
It is a farce based on Rinehart's 1908 novella of the same name, which had been expanded into a bestselling 1909 novel titled When a Man Marries.
Producers Lincoln Wagenhals and Collin Kemper asked Rinehart to adapt the novella for the stage.
[2] Rinehart and Hopwood would later collaborate on two other hit plays, Spanish Love and The Bat,[1][3] both also produced by Wagenhals and Kemper, who came out of retirement.
[2] In 1925 the play was adapted into a silent film of the same name starring Lillian Rich and Creighton Hale.