Earthshock

The Earth is hosting a conference to discuss battling the Cybermen, so naturally, the Cybermen are plotting to destroy the Earth and the Doctor is in the midst of it…

Black Orchid

The TARDIS arrives in 1925 England, where due to a case of mistaken identity, the Doctor ends up playing in a local cricket match. The travellers accept an invitation to a costume party but events take a more sinister turn when the Doctor finds a dead body.

The Visitation

Failing to take Tegan to Heathrow Airport, the TARDIS lands in the 17th Century. After exploring, the Doctor and his companions find a space capsule has crash-landed, and three Terileptil prison escapees intended to wipe out the population of the Earth by releasing rats infected with an enhanced form of the great plague.