1/4 When the TARDIS lands in 12th Century Palestine, Barbara is captured by the Saracen horde.
6/6 The Menoptra attack the Carsinome and the Doctor comes face-to-face with the Animus.
5/6 Barbara and the Menoptra hide in temple. The Doctor and Vicki flee the Carsinome.
4/6 Ian and Vrestin fall into caverns beneath the surface of Vortis and encounter the Optera.