Maureen O'Brien reads this new novelisation of a BBC TV adventure featuring the Tenth Doctor, as played on screen by David Tennant.
The first human colony on Mars is destined for destruction in a nuclear explosion. This tragedy is a fixed point in history. The laws of time dictate that it cannot - must never - be changed. But as the Doctor's darkest hour comes calling, he resolves to break the rules as he never has before...
Maureen O'Brien, who played Vicki in the BBC TV series, reads Phil Ford's novelisation of his 2009 TV episode co-written with Russell T Davies.
