Discover
A Martian probe-rocket containing two engineers is buried underneath rubble when a bridge collapses.
Original Release
11/04/1965
Cast
| Name | Character |
|---|
| Ray Barrett | John Tracy / Allington Bridge Controller / Kirby / Dr R. G. Korda |
| Peter Dyneley | Jeff Tracy / Professor Wingrove / NTBS Reporter / Crane Chief |
| Christine Finn | Tin-Tin Kyrano / Grandma Tracy / Tin-Tin Kyrano (voice) |
| David Graham | Gordon Tracy / Parker / Brains / Dave Clayton / Frank / Chuck / Policeman / Brains (voice) |
| David Holliday | Virgil Tracy (voice) / Virgil Tracy |
| Matt Zimmerman | Alan Tracy / Bill Craddock / 2nd NTBS Reporter / Alan Tracy (voice) |
| Sylvia Anderson | Lady Penelope Creighton-Ward / Lady Penelope Clayton Ward |
| Paul Maxwell | Captain Paul Travers |
| Alexander Davion | Space Captain Greg Martin |
Writers
Creators
Sylvia Anderson, Gerry Anderson
Cast
| Name | Character |
|---|
| Ray Barrett | John Tracy / Allington Bridge Controller / Kirby / Dr R. G. Korda |
| Peter Dyneley | Jeff Tracy / Professor Wingrove / NTBS Reporter / Crane Chief |
| Christine Finn | Tin-Tin Kyrano / Grandma Tracy / Tin-Tin Kyrano (voice) |
| David Graham | Gordon Tracy / Parker / Brains / Dave Clayton / Frank / Chuck / Policeman / Brains (voice) |
| David Holliday | Virgil Tracy (voice) / Virgil Tracy |
| Matt Zimmerman | Alan Tracy / Bill Craddock / 2nd NTBS Reporter / Alan Tracy (voice) |
| Sylvia Anderson | Lady Penelope Creighton-Ward / Lady Penelope Clayton Ward |
| Paul Maxwell | Captain Paul Travers |
| Alexander Davion | Space Captain Greg Martin |
Producers
| Name | Role |
|---|
| Gerry Anderson | Producer |
| Reg Hill | Producer |
