This 70's TV melodrama lacks the subtle dramatic points of the Tyrone Power version. Much of the film consists of Martin Sheen shouting at the passengers as they go through hysterical fits. The film also sees fit to try and "develop" the characters more than the Power version, with short 30 second back stories provided by each during a calmer scene.
The film is more remarkable for the acting talent that would go on to bigger things in Hollywood. Ironically, Happy Days' Tom Bosley was likely the most recognizable face in this ensemble upon the film's first airing in 1975, 4 years before Apocalypse Now would rocket Martin Sheen to fame, and two years before child star Leif Garrett's singing career would take off. Other notable appearances include a very young Bruce Davison, later Academy Award Nominee for Best Supporting Actor; Diane Baker, character actress known for her role as Sen. Ruth Martin in Silence of the Lambs; and Philip Baker Hall, esteemed character actor later in life.
While this version includes courtroom scenes, they add very little to the story, which, while based on the actual court case US v. Holmes, occurred in 1842. As a "where are they now" type curiosity, this film is of some interest, but you'll soon tire of the bad dialog and cardboard characters. Do yourself a favor and stick with the Power version.