Arsenic and Old Lace is an American dark comedy movie by Frank Capra, starring Cary Grant. It is based on Joseph Kesselring's play Arsenic and Old Lace. The script adaptation was by Julius J. Epstein and Philip G. Epstein. Capra actually shot the movie in 1941 because of star Cary Grant was then available, but it was not released until 1944.
Thouigh having written some books ridiculing marriage as an "old-fashioned superstition", Mortimer Brewster (Cary Grant) falls in love with Elaine Harper (Priscilla Lane), who was his neighbour when he grew up to him next door in Brooklyn, and on Halloween day they marry. Immediately after the wedding, Mortimer visits the eccentric but lovable family who raised him and who live in his old family home: His elderly aunts Abby (Josephine Hull) and Martha (Jean Adair), and his brother Teddy (John Alexander) believes he is Theodore Roosevelt himself.