Doctor Who - The Companion Chronicles - The Catalyst

A new adventure with the Second Doctor as told by his companion, Polly. February, 1944: France is occupied by the Third Reich, the French Gestapo has an iron grip and the native resistance attempts to overthrow the invaders. On one quiet winter's night, a British plane crashes to the ground, leaving a flying officer desperate to escape via the evasion lines. Separated from the TARDIS, Ben and Jamie, the Doctor and Polly find themselves with enemies on all sides.

They call him The Pugilist. It is the dawn of a new century and a vigilante is on the loose. The scourge of the criminal underclass. The saviour of the virtuous and the protector of the weak. The police are baffled, the public enamoured...but Professor George Litefoot and Henry Gordon Jago are on the case. Or at least they will be when they've finished their beer. What is the source of The Pugilist's spectacular supernatural powers? Is he alone in his noble quest?

new adventure with the Seventh Doctor as told by his companion, Ace. Two prisoners meet in a prison cell. Zara is searching for the segments of the Key to Time; she was born only yesterday, but already she's killed hundreds of people. Ace is more ambitious: she is going to kill everyone on the planet. What have they got against the people of Erratoon? They go peaceably about their simple assignments beneath their artificial sky. They share their meals and leisure time, and they never ask questions.

The Doctor, Susan, Ian and Barbara land on the planet Hydra, where Admiral Jonas Kaan leads a vast flotilla of ships trying to elude the vicious race that has invaded and occupied their world. But his ships are being picked off one by one, vessels and crews dragged underwater by an unseen foe. The time travellers find themselves pitched into battle against the Voord, the ruthless enemy they last encountered on the planet Marinus.

'Prison in Space' by Dick Sharples, adapted by Simon Guerrier: A relaxing break for the Doctor and his companions Jamie and Zoe becomes something decidedly more sinister when they are arrested for trespassing. But what has happened to the planet Earth? And how has the malevolent Chairman Babs gained control? As the Doctor and Jamie are incarcerated in a prison that they can never escape from, Zoe is forced to change sides....