The Protectors find themselves in the middle of a war over some antiques.

Intro special guest: Prentis Hancock.

A new invention – the Crablogger (a nearly fully automated logging machine that converts wood into fuel) — threatens widespread devastation if it collides with an unfinished dam, after its drivers collapse due to food poisoning.

Intro special guest; Prentis Hancock.

Zelda attacks Earth on Christmas Eve, convinced that the Terrahawks' guard will be down. However, Ninestein anticipates such a move, and all-out war erupts. Perhaps the Christmas spirit can even reach someone like Zelda....

The townspeople plan a party for Tex's birthday.

Troy is assigned to recover a giant pearl from an ocean cave, but the task is not as simple as it seems.

Intro special guest: Sadie Miller

Masterspy sabotages a prototype atomic-powered diesel train on its journey from London to Brighton in England in a bid to assassinate a VIP passenger. Dr Beaker and the rest of the Supercar team have been invited to drive the train, but will they be able to stop the sabotaged engine before the vehicle crashes into a station at the end of the line?

King Dithers decides to brush his hair before his trip to Frutown, and he accidentally leaves his crown behind. After Daffy the Donkey pulls him into town, the king invites Torchy and Squish back to the palace for tea, but they soon discover the crown is not where he left it.

Communications problems at Moonbase are traced to a non-SHADO mining operation.

Intro special guest: Craig Morris.

You've Never Seen This, Gerry Anderson's directorial debut, was a short-lived television series from 1955 focusing on people and places with strange or unusual stories to share.

Intro special guest: Nicholas Young.

Joe must act as a bodyguard to a new, democratically elected president to prevent his assassination at the hands of the country's former dictator.

Intro special guest: Nicholas Young.