Commander Linx's pragmatic mission to exploit medieval technology and resources for Sontaran gain, opposed by the Doctor's resistance and ethical interference

Sarah Jane Smith is seized in Irongrons hall after being found near the castle. Though she dismisses the confrontation as a ridiculous pantomime and jokingly suggests it might be a …

The Doctor confronts Linx in the workshop only to find the Sontaran warrior has anticipated his arrival. Linx’s patience exhausted by the Time Lord’s interference, he raises his ray weapon …

The Doctor, newly freed from Linx’s mind-control headset, turns his immediate attention to locating Sarah. In his haste he blurts out his adopted alias Smith when grateful Professor Rubeish instinctively …