The whole village mourns when General O'Leary, owner of a hunting estate in South Ireland, is killed in an accident. His nephew, Jasper O'Leary, takes over the state and soon has aroused the displeasure of all, with the exception of Serena McGluskey, as much a schemer as he is a cad. Led by Thady O'Heggarty, the villagers plot to drive Jasper away. They use the occasion of "O'Leary Night", when the ghost of the first O'Leary walks the halls, to create general chaos.
David Niven
as Jasper O'Leary
Yvonne De Carlo
as Serena McGlusky
Barry Fitzgerald
as Thady O'Heggarty
George Cole
as Terence
Noelle Middleton
as Kathy McGlusky
Robert Urquhart
as Dr. Michael Flynn
Michael Shepley
as Major McGlusky
Joseph Tomelty
as Dooley
A.E. Matthews
as General O'Leary
Eddie Byrne
as Lannigan
Jimmy Mageean
as Divarsion
Patrick McAlinney
as O'Connor
