Bonanza: Under Attack is a 1995 made-for-television Western film. It is a sequel to the 1959–1973 television series Bonanza and television films Bonanza: The Next Generation (1988) and Bonanza: The Return (1993). The film was directed by Mark Tinker and features noted character actors Ben Johnson, Jack Elam, and Richard Roundtree (reprising their roles from the 1993 film), as well as Leonard Nimoy and Dennis Farina.
The only leading actors from the original series who were still alive during production, Pernell Roberts and David Canary, do not appear in the film. However, the cast does include Michael Landon Jr. and Dirk Blocker, sons of the original series's actors who starred as Little Joe and Hoss Cartwright.
Nimoy and Farina portray real-life figures, outlaw Frank James (brother of Jesse James) and Pinkertons detective Charlie Siringo.
Partial cast
Ben Johnson as Bronc Evans
Michael Landon Jr. as Benjamin 'Benj' Cartwright
Dirk Blocker as Fenster
Jack Elam as 'Buckshot'
Emily Warfield as Sara Cartwright
Brian Leckner as Josh Cartwright
Jeff Phillips as Adam 'A.C.' Cartwright Jr. Richard Roundtree as Jacob Dennis Farina as Charlie Siringo Leonard Nimoy as Frank James Ted Markland as Cole Gordon Jennison Noice as Jack 'Black Jack' (billed as J. Gordon Noice) Kenny Call as Mears