Klein's Story - the Time Lord learns more about his dubious companion, the Nazi scientist. Seventh Doctor adventure stars Sylvester McCoy and Tracey Childs.

The Time Lord transports his sinister companion to save a species from extinction. Seventh Doctor adventure stars Sylvester McCoy and Tracey Childs.

The Time Lord and Doctor Klein get to grips with the fate confronting the Vrill. Seventh Doctor adventure stars Sylvester McCoy and Tracey Childs.

With time running out for the Vrill, Klein has to confront their greatest threat alone. Seventh Doctor adventure stars Sylvester McCoy and Tracey Childs.