Bonanza: Adam and Hoss meet Philip Diedesheimer, a Dutch immigrant who is trying to convince the silver mine owners in Virginia City that his square set mine system works. The owner of one mine is determined to see that Deidesheimer's idea is not accepted. However, when a friend of Adam gets killed in a mine collapse, the Cartwright boys set about making sure that Deidesheimer is given the chance he deserves.

Starring:

Dan Blocker, Lorne Greene, Michael Landon, Pernell Roberts

Genre:

Action, Romance, Western, War