Despite the introduction of adult character motivation, explicit violence, and a perhaps justifiable alteration of the ending, the majority of the action and dialogue, including a delightful exchange between Challenger and Summerlee that's lifted almost verbatim from Doyle's novel, suggests that the screenwriters were at least somewhat familiar with their source. Other than inexplicably transposing the 'lost world' discovered by Maple White from South America to Mongolia in the mid-1930s, and adding the character of Amanda (White's daughter-a character roughly parallel to the one created by Bessie Love in the 1925 silent version), this movie is a fairly faithful, albeit gritty and adult, retelling of the boys' adventure story written by Sir Arthur Conan Doyle in 1912. In contrast, this 1998 version is a direct-to-video release that adheres more closely to the spirit of Doyle's novel, contains adult violence and gore, packs considerably more emotional wallop, and has a dynamic climax.

Summerlee in both versions), takes place in South America, introduces the bikini-clad jungle girl, Veronica, and the female adventurer, Marguerite Krux, sanitizes the violence, has cheaper effects, and lacks an ending (as may be expected in a TV pilot episode). Although made by the same production company, the 1999 version has a different cast (except for Michael Sinelnikoff, playing an endearing Dr. Not to be confused with the 1999 TV pilot movie of the same name (a mistake made by many of the reviewers on this site).

The lost world arthur