The aliens are preoccupied with the birth of Cy-star's child while the Terrahawks prepare to launch a sneak attack.

When the Mysterons seemingly threaten the President of the United States with assassination, Spectrum implements maximum security measures around his residence. But as the Mysterons' self-imposed deadline approaches, Scarlet realises that the organisation is protecting the wrong target.

A radio call from planet Earth to the Moon gives hope of transporting the Alphans back home, until things go terribly wrong during the first crewed transport sequence.

Troy, Phones and Atlanta are sent to Scotland to solve the mystery of Nessie once and for all.

Supercar is trapped by a mine underwater.

Troy falls asleep in the Standby Room and dreams about shrinking in size and witnessing a meeting between the undersea races in which they finalise their plans to destroy Marineville.

After the Mysterons take over a Phoenix policeman named Rimmer and use him to steal a canister of deadly alien spores brought back by a space probe from Ganymede, Captain Scarlet and Captain Blue are ordered to give chase - but they are thrown off their trail when the Mysterons take over a biker named Brock and use him to carry out the plot instead. Meanwhile, Captain Ochre's Raid Bike is stolen by another biker named Colt.

Masterspy plans to steal an ancient jewel.

World leaders are left paralysed after being attacked with poison darts known to have been used only by a lost South American tribe.

With the brain pattern of a terrorist, Joe has little time to prevent the destruction of a new transatlantic hoverliner.