The Doctor’s internal conflict between professional detachment and personal protectiveness, especially concerning Sarah Jane Smith and Rubeish's loyalty

The Doctor arrives at a cramped makeshift accommodation inside a top-secret research facility where the Brigadier has been forced to confine the staff due to a string of unexplained disappearances. …

The Doctor disregards the Brigadier’s stern orders to remain, seizing the chance to pursue Professor Rubeish and the temporal anomaly. Sarah follows him into the TARDIS without permission, leaving the …