Abbott and Costello are pure slapstick, and sometimes they get a little overmuch, but this movie is a lot of fun nevertheless. There is a good supporting cast, including the incomparable Arthur Treacher. In this entry, the boys are plumbers and get summoned by our old favorite Thurston Hall. Costello is sweet on female cab driver Marion Hutton (sister of the more famous but less pretty Betty Hutton). It happens that there is a masquerade party going on in the mansion, and Hutton mistakes a wealthy Kirby Grant, who is disguised as a cab driver, to be a colleague on duty. He does not believe she really is a cabbie, and a quasi-Cinderella story results.
One funny scene is the 6'3" Treacher butling for the 5'5" Costello.
Grant later was the star of the Sky King television program that we watched in my childhood.