(Select Actor or Writer to List Associated Episodes)
| Actors | Adaptations | Calendars | Duplicates | Numbers | Plots | Titles | Writers |
| Episode: | 0712 |
| Title: | The Tunnel Man |
| Air Dates: | First Run - September 20, 1977
Repeat - February 8, 1978 |
| Plot: | A city government is held hostage by a mad scientist with a device that can tunnel through solid rock as easily as a submarine can travel through water. Armed with a powerful laser, he can either trigger or prevent an empending earthquake. As evidence points toward an eminent quake, the mayor must make a decision. |
| Actors: |
Ralph Bell
Court Benson Earl Hammond Robert Maxwell |
| Writer: | Percy Granger |