PLANET OF THE OOD The Doctor takes Donna to the Ood-Sphere where they encounter savage, red-eyed Ood. What is the horrible truth behind the work of the sinister conglomerate Ood Operations? THE SONTARAN STRATAGEM/THE POISON SKY The Doctor helps UNIT investigate child genius Luke Rattigan and his ATMOS system. The Sontaran stratagem has begun... THE DOCTOR'S DAUGHTER Caught in the middle of a war on the planet Messaline, the Doctor meets someone unexpected: his daughter. Can the Time Lord stop the war before it ends in massacre on both sides? THE UNICORN AND THE WASP It's 1926 and Agatha Christie mysteriously disappears, only to be found with no memory of events. Do the enigmatic police inspector and his plucky assistant know what happened?