The Stingray crew fall into a trap set at a weather station by undersea aliens and are interrogated about Marineville's defence systems.
| Actor | Role |
|---|---|
 Don MasonCaptain Troy Tempest (voice) | Captain Troy Tempest (voice) |
 Robert EastonLieutenant George Lee 'Phones' Sheridan (voice) | Lieutenant George Lee 'Phones' Sheridan (voice) |
 Ray BarrettCommander Sam Shore / Sub-Lieutenant John Horatio Fisher / Ilium (voice) | Commander Sam Shore / Sub-Lieutenant John Horatio Fisher / Ilium (voice) |
 Lois MaxwellLieutenant Atlanta Shore (voice) | Lieutenant Atlanta Shore (voice) |
 David GrahamCarter / Epayus (voice) | Carter / Epayus (voice) |