Mars, 2059. Bowie Base one. Last recorded message: Don't drink the water. Don't even touch it. Not one drop... all will be revealed in 'The Waters of Mars', starring Lindsay Duncan as the Doctor's cleverest and most strong-minded companion yet.
While visiting Mars, the Doctor crosses paths with a crew of scientists, who become infected by an alien water creature that threatens their lives.
Also available on Xfinity
A creeping infection beneath the Martian surface threatens not only the human race, but also the Doctor's most fundamental beliefs. Together with Adelaide Brooke, the Doctor must defeat a seemingly unstoppable menace before it can reach Earth.