| <table border="1"> | |
| <tr><td>Year</td><td>Title</td><td>Role</td><td>Notes</td></tr> | |
| <tr><td>1955</td><td>The Vise</td><td>Tony Mason</td><td>1 episode ("Gift from Heaven")</td></tr> | |
| <tr><td>1958</td><td>The Vise</td><td>Vance</td><td>1 episode ("Blood in the Sky")</td></tr> | |
| <tr><td>1958</td><td>Armchair Theatre</td><td>Jack 'Pal' Smurch</td><td>1 episode ("The Greatest Man in the World")</td></tr> | |
| <tr><td>1959</td><td>Brand</td><td>Priest Brand</td><td>Henrik Ibsen play</td></tr> | |
| <tr><td>1961</td><td>Armchair Theatre</td><td>Nicholai Soloviov</td><td>1 episode ("The Man Out There")</td></tr> | |
| <tr><td>1960–62 1964–67</td><td>Danger Man</td><td>John Drake</td><td>39 + 47 episodes. Also directed three episodes.</td></tr> | |
| <tr><td>1963</td><td>Walt Disney's Wonderful World of Color</td><td>Doctor Christopher Syn/ Scarecrow of Romney Marsh</td><td>3 episodes</td></tr> | |
| <tr><td>1967–68</td><td>The Prisoner</td><td>Number Six</td><td>17 episodes. Also directed five episodes.</td></tr> | |
| <tr><td>1969</td><td>Journey into Darkness</td><td>Host</td><td>Made-for-TV film</td></tr> | |
| <tr><td>1974</td><td>Columbo</td><td>Colonel Lyle C. Rumford</td><td>1 episode ("By Dawn's Early Light")</td></tr> | |
| <tr><td>1975</td><td>Columbo</td><td>Nelson Brenner</td><td>1 episode ("Identity Crisis"). Also directed.</td></tr> | |
| <tr><td>1976</td><td>Columbo</td><td>N/A</td><td>1 episode ("Last Salute to the Commodore") – director</td></tr> | |
| <tr><td>1977</td><td>Rafferty</td><td>Doctor Sid Rafferty</td><td>13 episodes. Also directed one episode.</td></tr> | |
| <tr><td>1979</td><td>The Hard Way</td><td>John Connor</td><td>Made-for-TV film</td></tr> | |
| <tr><td>1983</td><td>Jamaica Inn</td><td>Joss Merlyn</td><td>-</td></tr> | |
| <tr><td>1985</td><td>American Playhouse</td><td>Chief magistrate</td><td>3 episodes ("Three Sovereigns for Sarah" parts I, II & III)</td></tr> | |
| <tr><td>1987</td><td>Murder, She Wrote</td><td>Oliver Quayle</td><td>1 episode ("Witness for the Defense")</td></tr> | |
| <tr><td>1990</td><td>Columbo</td><td>Oscar Finch</td><td>1 episode ("Agenda for Murder"). Also directed.</td></tr> | |
| <tr><td>1998</td><td>Columbo</td><td>Eric Prince</td><td>"Ashes to Ashes". Also directed.</td></tr> | |
| <tr><td>2000</td><td>Columbo</td><td>N/A</td><td>1 episode ("Murder with Too Many Notes") – director</td></tr> | |
| <tr><td>2000</td><td>The Simpsons</td><td>Number Six</td><td>1 episode ("The Computer Wore Menace Shoes")</td></tr> | |
| </table> | |