Total Episodes: 26
Original Air Dates: Sept. 14, 1958-July 5, 1959
Original Network: ITV
Dr. Peter Brady (Voice of Robert Tim Turner): The title character, while he searches for a cure for his condition, he acts as an agent for British Intelligence. In earlier episodes, he wears sunglasses, bandages and gloves when in public, keeping his invisibility a secret, but knowledge of his condition becomes public. Johnny Scripps played Brady when seen without bandages; as a midget, he was able to “hide” inside the clothes.
Diane Brady Wilson (Lisa Daniely): Brady's widowed sister.
Sally Wilson (Deborah Watling): Diane's daughter.
Sir Charles Anderson (Series 1)/Colonel Ward (Series 2) (Ernest Clark): Brady's contact in British Intelligence.
Robert Ragland appeared in three episodes playing Detective Inspector Heath. You may have seen him in single episodes of The Adventures of Robin Hood, two episodes of Danger Man (shown in the USA as Secret Agent), or a 1964 episode of The Saint.
Bruce Seton played three different roles in the series. He appeared in three episodes of The Adventures of Robin Hood, two of them playing Will Scatlock; he was also King Arthur in The Adventures of Sir Lancelot. His biggest geek role was likely as Prof. Flaherty in Gorgo.
Lloyd Lamble played Dr. Hanning in three episodes, you may have seen him as Dr. Hubert Marlow in the Avengers episode “The Gravediggers,” or playing Stapleton in The Prisoner episode “Do Not Forsake Me, Oh My Darling.” He also appeared as a police sergeant in three episodes of Pardon My Genie, a show I've never heard of. But perhaps his most recognizable geek roles were as Inspector in Quatermass II: Enemy From Space or Detective Simmons in Curse of the Demon.
Paul Carpenter also provided the voice of Dr. Brady in a few episodes, but he could actually be seen as Capt. Larson in Fire Maidens of Outer Space, or in his brief part as a reporter from the “Express” in First Men in the Moon.
Derek Sydney played parts in two episodes, you may have seen him as Wilde in The Crawling Eye, or perhaps in his guest appearances on Danger Man (aka Secret Agent), or as Sevcheria in four episodes of Doctor Who in 1965. He also appeared in three episodes of The Saint, as well as playing De Sarem in three episodes of Timeslip, a 1971 show I've not heard of, and sounds like it would be fun viewing!
Derren Nesbitt also appeared in two episodes, he was a radio officer in The Giant Behemoth, appeared in two episodes of Danger Man, an episode of The Saint, played Tegana in seven 1964 episodes of Doctor Who, and also played Inspector Lebec in The Saint and the Brave Goose and Return of the Saint.
Michael Ripper appeared in two episodes likewise, he played the Outer Party Orator in the 1956 version of 1984, was Sgt. Harry Grimsdyke in X: The Unknown, Ernie in Quatermass II: Enemy From Space, Kurt in The Revenge of Frankenstein, Sergeant in the TV series Quatermass and the Pit, the poacher in the 1959 version of The Mummy, Old Soak in Curse of the Werewolf, three roles in Danger Man, Jeremiah Mipps in Night Creatures, Longfaced Cabbie in the 1962 version of The Phantom of the Opera, Achmed in The Curse of the Mummy's Tomb, Sgt. Jack Swift in the Plague of the Zombies, Tom Bailey in The Reptile, Longbarro in The Mummy's Shroud, and a number of other TV and movie geek roles.
Willoughby Goddard played Crowther in two episodes, and aside from parts in single episodes of Danger Man, The Avengers, and The Saint, you'd more likely remember him as Taybor the Trader in an episode of Space: 1999, or as an Eggman in Jabberwocky, the Archibishop in an episode of the Black Adder, or the school reverend in Young Sherlock Holmes.
If you get a chance to watch this show, loo for two episodes with an uncredited Oliver Reed, as a man at a roulette table in one, and a cafe patron in the other. Later, he was also uncredited as a tough in The Two Faces of Dr. Jekyll before playing his greatest geek role, Leon Coriedo in Curse of the Werewolf. He also played Harry Cobtree in The Night Creatures, appeared in two episodes of The Saint, and of course, you definitely recall him as Athos in The Three Musketeers and The Four Musketeers.
Brian Clemens wrote a half dozen episodes of the show, of course he's better known for writing episodes of The Avengers and The New Avengers, but it seems that this show was his start in geek TV writing. While Deborah Watling didn't have any geek credits prior to this show, I can't not mention she played Victoria Waterfield in 41 episodes of Dr. Who from 1967-1968.
DVD Release: Full seasons and complete series.
Website: None that I've found.
Note: This is a show that I remember watching in the 1970s, when it was run in syndication on a local station that was just starting up, along with the Irwin Allen shows, but I must confess, I have no specific memories of it!