Wagon Train (1957), episode "The John Cameron Story" as John Cameron Alfred Hitchcock Presents (1958) (Season 3 Episode 24: "The Foghorn") as Allen Bliss Decision (1958) (Season 1 Episode 4: "The Tall Man") as Colonel T. J. Allan DuPont Show of the Month (1960), episode "The Scarlet Pimpernel" as Sir Percy Blakeney Route 66 (1961), episode "Fly Away Home" – as Summers Alfred Hitchcock Presents (1962) (Season 7 Episode 13: "The Silk Petticoat") as Sir Humphrey J. Orford The Virginian (TV series) (1963), episode "Vengeance Is the Spur" Perry Mason (1963), episode "The Case of the Libelous Locket" – as Professor Edward Lindley The Alfred Hitchcock Hour (1963) (Season 1 Episode 25: "The Long Silence") as Ralph Manson Lost in Space (1965) – as The Keeper – two episodes Bonanza (1965), episode "Once a Doctor" – as Professor Poppy / Dr. P.A. Mundy Batman (1966) – as The Sandman – two episodes The Time Tunnel (1966), episode #1 "Rendezvous With Yesterday" – as the Captain of the Titanic The F.B.I. (1967), episode "The Conspirators" as Conrad Letterman The Man from U.N.C.L.E. (1967), episode "The THRUSH Roulette Affair" as Barnaby Partridge The Invaders (1967), episode "The Innocent" as Magnus The Invaders (1968), episode "Summit Meeting" – two part episode.
Wagon Train (1957), episode "The John Cameron Story" as John Cameron Alfred Hitchcock Presents (1958) (Season 3 Episode 24: "The Foghorn") as Allen Bliss Decision (1958) (Season 1 Episode 4: "The Tall Man") as Colonel T. J. Allan DuPont Show of the Month (1960), episode "The Scarlet Pimpernel" as Sir Percy Blakeney Route 66 (1961), episode "Fly Away Home" – as Summers Alfred Hitchcock Presents (1962) (Season 7 Episode 13: "The Silk Petticoat") as Sir Humphrey J. Orford The Virginian (TV series) (1963), episode "Vengeance Is the Spur" Perry Mason (1963), episode "The Case of the Libelous Locket" – as Professor Edward Lindley The Alfred Hitchcock Hour (1963) (Season 1 Episode 25: "The Long Silence") as Ralph Manson Lost in Space (1965) – as The Keeper – two episodes Bonanza (1965), episode "Once a Doctor" – as Professor Poppy / Dr. P.A. Mundy Batman (1966) – as The Sandman – two episodes The Time Tunnel (1966), episode #1 "Rendezvous With Yesterday" – as the Captain of the Titanic The F.B.I. (1967), episode "The Conspirators" as Conrad Letterman The Man from U.N.C.L.E. (1967), episode "The THRUSH Roulette Affair" as Barnaby Partridge The Invaders (1967), episode "The Innocent" as Magnus The Invaders (1968), episode "Summit Meeting" – two part episode.