A singing mechanic from 1912 finds himself in Arthurian Britain. Bing Crosby,Rhonda Fleming,Cedric Hardwicke,William Bendix,Murvyn Vye,Virginia Field,Joseph Vitale,Henry Wilcoxon,Richard Webb,Alan Napier,Julia Faye,Mary Field,Ann Carter,Eric Alden,Fred Aldrich,Lucille Barkley,Colin Campbell,George Cathrey,Tony Cirillo,Charles Coleman,Jim Davies,Donya Dean,Vernon Dent,Lester Dorr,George Douglas,Jimmie Dundee,Tay Dunn,Art Foster,John George,John Goldsworthy,Robert Graham,Alec Harford,Jimmy Hawkins,Timmy Hawkins,Olin Howland,Olaf Hytten,Duke Johnson,Anthony Jowitt,Richard Keene,George Kirby,Larry Lawson,Babe London,Joseph Marr,Doreen McCann,John 'Skins' Miller,Roger Moore,Bob Morgan,Frances Morris,Leonard Mudie,Ottola Nesmith,Georgie Nokes,B.G. Norman,Vesey O'Davoren,Dorothy Phillips,Hugh Prosser,Joey Ray,Gordon Richards,Russell Saunders,Paul Scardon,Reginald Sheffield,Art Stewart,David Stollery,Fred Sweeney,Larry Thompson,Victor Travers,Harry Wilson,Frederick Worlock,Fred Zendar