Ep 25. Deadly Cloud

Voyage to the Bottom of the Sea season 3 episode 25, titled "Deadly Cloud," follows the crew of the Seaview as they race against time to stop a deadly cloud of radiation from causing catastrophic damage to the planet.

The episode opens with the Seaview being sent on a top-secret mission by the government to deploy a device that will neutralize a cloud of radiation that has formed in space. The cloud is the result of a nuclear experiment gone wrong and if it reaches Earth, it will cause widespread destruction and death.

Captain Crane (played by David Hedison) and his crew know that time is of the essence and they must act quickly to complete their task before it's too late. However, they soon encounter a series of obstacles that threaten to derail their mission and put their own lives in danger.

One such obstacle is a band of ruthless pirates who have set their sights on the Seaview. Led by a cunning and deadly woman named Mardina (played by Marianna Hill), the pirates are determined to hijack the Seaview and use it to further their own nefarious goals.

Crane and his crew are forced to engage in a tense and dangerous battle with the pirates, using all their skills and resources to fend off their attacks and protect the Seaview. Meanwhile, time is running out as the deadly cloud draws closer to Earth.

As the Seaview edges closer to the cloud, the radiation levels on board begin to soar, putting the crew at risk of serious harm. Despite the danger, Crane and his team press on, knowing that failure is not an option.

Finally, after a series of harrowing challenges, the Seaview reaches the cloud and deploys the device that neutralizes it. The crew breathes a sigh of relief as the threat to Earth is averted and they begin their journey back home.

However, the victory is short-lived as they soon discover that the pirates have stowed away on board the Seaview and are intent on causing further chaos and destruction. Crane and his crew must once again draw on all their skills and resources to fend off the dangerous intruders and emerge victorious.

In the end, the crew of the Seaview emerges triumphant, having successfully completed their top-secret mission and defeated a dangerous group of pirates. The episode ends on a tense and thrilling note, leaving viewers on the edge of their seats until the very last moment.