Harry Towb

Simon receives a telephone call from a bookmaker who is being threatened by a "protection" gang - and deals with the matter in his own way.

The Master arrives on Earth in his TARDIS, camouflaging it as a horse box in a Circus. He immediately contacts the Nestenes and assists them in mounting a second invasion of Earth. The Doctor and his new assistant, Jo Grant, have to tackle the Autons, the Master and a large number of deadly daffodils!

After a successful burglary in the house of his actress friend, the Saint is after an elusive, big-time fence whose identity is still unknown.

The Doctor investigates Rossini's International Circus. The Master, meanwhile, has assumed control at the plastics factory and is manufacturing new lines of living plastics.

The TARDIS arrives on 21st Century Earth where all long distance journeys are made instantaneously by T-Mat. But aliens have invaded the T-Mat relay station on the Moon.