Slip and Sach are working as cleaners in a high rise building. They enter an office to clean it when a messenger hears them use Slip's given name, Terrance Mahoney. The messenger has a letter for "Terrance Mahonoey, Esq." and mistakenly delivers it to Slip. The letter informs Slip that he has inherited a mansion in Long Island. The boys then make their way to the mansion and find that it is inhabited by diamond smugglers. The real owner of the house shows up and helps save the day and defeat the smugglers and gives the boys the house as a reward.
as Slip Mahoney
as Sach Jones
as Gabe Moreno
as Count Boris Petrov
as Terrence Mahoney
as Teresa Mahoney
as Whitey
as Chuck
as Sandra Hasso
as Butch
as Digger
as Karl
as Franz Drum
as T.P. Williams
as Messenger Boy
as Dr. Franz Lieber
as Ryan, Building Manager
as Dr. Latka
