Killer Diller (1948)

African American musical variety show featuring The Nat King Cole Trio, the Clark Brothers and other musical and comedy acts. Dusty Fletcher plays a comic, tap dancer and bad magician. While practicing his routine for that evening's variety show, he accidentally vanishes Lola (Nellie Hill), the girlfriend of the show's manager Baltimore Dumdone (George Wiltshire). She was wearing a thousand-dollar string of pearls and it seems most likely that criminality is afoot.
Dusty's slapstick antics take up a large portion of the film's first act, with some Keystone Kops-type schtick thrown in when four police officers (Fredie Robinson, William Campbell, Edgar Martin and Sidney Easton) begin chasing Dusty in and out of his disappearance-cabinet.

Cast (IMDB): Dusty Fletcher as Dusty (as Dusty 'Open the Door Richard' Fletcher); George Wiltshire as Dumdone, the Manager; Butterfly McQueen as Butterfly; Nellie Hill as Lola, His Fianée; Freddie Robinson as Sarge; William Campbell as Policeman; Edgar Martin as Policeman; Sidney Easton as Policeman (as Sid Easton); Augustus Smith as Stage Hand (as Gus Smith); Moms Mabley as Vaudeville Star (as Jackie Mabley); Ken Renard as The Great Voodoo; Andy Kirk and His Orchestra as Themselves; The Clark Brothers as Themselves; Nat 'King' Cole as Himself (as King Cole Trio); The Four Congaroos as Themselves; The King Cole Trio as Themselves; Andy Kirk as Himself; Johnny Miller as Himself (as The King Cole Trio); Oscar Moore as Himself (as The King Cole Trio); Patterson and Jackson as Themselves; Warren Patterson as Himself (as Patterson & Jackson).

More Information:
IMDB: http://www.imdb.com/title/tt0040508/
Internet Archive: http://archive.org/details/killer_diller
Wikipedia: http://en.wikipedia.org/wiki/K....iller_Diller_(1948_f

Cast from Wikipedia: Dusty Fletcher as Dusty; George Wiltshire as Dumdone, the Manager; Butterfly McQueen as Butterfly; Nellie Hill as Lola, His Fianée; Freddie Robinson as Sarge; William Campbell as Policeman; Edgar Martin as Policeman; Sidney Easton as Policeman; Augustus Smith as Stage Hand; Moms Mabley as Moms; Ken Renard as The Great Voodoo. The Clark Brothers, Nat 'King' Cole and The King Cole Trio, The Four Congaroos, Johnny Miller, Oscar Moore and Warren Patterson appear as themselves. http://en.wikipedia.org/wiki/K....iller_Diller_(1948_f#Cast