The BBC Doctor Who Blog has an excellent write up to prepare you for this weekend’s episode, Cold War:
The Doctor’s next adventure is called Cold War and it explodes onto screens tomorrow (Saturday). The TARDIS lands on a damaged Russian Submarine in 1983 as it spirals out of control, plunging into the ocean depths. An alien creature is loose on board, having escaped from a block of Arctic ice. With tempers flaring and a cargo of nuclear weapons on board, it’s not just the crew but the whole of humanity at stake! The episode is written by Mark Gatiss (The Unquiet Dead, Night Terrors) so we’re assured of scares, great moments of humour and some unexpected twists… All that, plus the return of the Ice Warriors makes this an umissable episode!
The fearsome Martians made their debut in the Second Doctor adventure The Ice Warriors and were an instant hit, returning about a year later in The Seeds of Death. These two stories established the Ice Warriors as a proud but cruel race, ruthless and relentless when pursuing their goal, which in both instances had been the planet Earth.
But interestingly, when they next crossed the Time Lord’s path in the Third Doctor adventure The Curse of Peladon, they had reformed, renouncing their militaristic ways and eschewing violence except in cases of self-defence. The Ice Warriors’ code of honour came to the fore and they even joined forces with their former foe. Their final appearance to date came in 1974’s The Monster of Peladon in which a rogue faction of Ice Warriors threatened the Doctor.