Loose in London (1953)

Word comes to the Bowery that the titled great-great-grand-uncle of Horace Debussy Jones (better known as Sach) is near death and has provided transportation to summon relatives from around the world. Sach, the Bowery Boys (Slip Mahoney, Butch Williams, Chuck Anderson) and soda shop owner Louie Dumbrowsky trade Sach's pre-paid first class ticket for lesser (much lesser) accommodations and embark for ye olde London towne. There, they find the old man, the Earl of Walsingham, already surrounded by sinister Sir Edgar Whipsnade, Reggie the obligatory fop, spinster Aunt Agatha, the young and seductive Lady Marcia, moronic Cousin Herbert, and Hoskins the butler. They, of course, are assembled in a plot to slowly poison the old Earl - and now to get rid of Sach and his pals when Sach gains the Earl's favor.