David Carradine and cast present an interesting and captivating episode every time. This show rules! Great guest stars: Mickey Rooney, John Saxon, Pamela Susan Shoop, etc...they all make for great entertainment! There is a good chemistry between Caine and his son Peter. Flashbacks are always cool. As to why young Caine had to change actors, who knows? Maybe Nathaniel Moreau got too big. Great show, I've watched episodes over and over again.