The Doctor sees the poisoning was caused by deadly nightshade and finds a cure.
As Ian’s condition worsens, the Doctor is still searching fruitlessly for a cure.
On the Sense-Sphere, Ian has succumbed to the deadly illness that is spreading everywhere.
The Sensorites take the Doctor and members of the spaceship crew down to their planet.
The Doctor and his companions are on board an Earth ship trapped with the Sensorites.
The TARDIS lands inside a spaceship orbiting the planet Sense-Sphere.