This film is something I find myself returning to repeatedly—it represents Hollywood at its finest. Historical accuracy isn’t really important here; instead, it delivers a fast-moving action adventure with a solid group of actors giving performances that are pleasant to experience. The story begins when raiding Vikings take the English King, leaving their kingdom vulnerable to the evil King "Aella" (Frank Thring). He quickly realizes there's a traitor among them—"Egbert" (James Donald)—who escapes to King "Ragnar" (Ernest Borgnine) and his attractive son "Einar" (Kirk Douglas). Egbert promises to provide maps that will enable further attacks on the frightened English. During a display of Einar’s falconry skills with their guest, Douglas meets the slave "Eric" (Tony Curtis), and following a brief struggle over whose bird is superior, Eric becomes “one-Einar.” Had it not been for an opportune moment involving Odin, that could have marked the end for the young slave. Simultaneously, the maps lead to their initial gain—Princess "Morgana" (Janet Leigh), who is engaged to "Aella," making her a valuable hostage. Curtis manages to flee with the princess and her spirited maidservant "Bridget" (Dandy Nichols), but they are pursued through dense fog by Norse warriors. It contains pretty much everything you could want. There’s a strong cast, lots happening, a touch of lively romance, plenty of energetic action—including a regrettable scene involving a woman with her head in a wheel being targeted with axes—and it's best to avoid overly restrictive clothing. The conclusion feels somewhat silly, but there’s undeniable chemistry between the leads; Borgnine seems to be thoroughly enjoying himself, and if you appreciate movies brimming with beautifully shot escapades and one of the finest castle sieges I’ve ever witnessed, then this is definitely for you. It isn't intellectually demanding—the script won't garner any awards—but it’s simply enjoyable.

Source on TMDB