Tegan Jovanka's moral and psychological crisis as she grapples with The Doctor's willingness to kill Davros, ultimately choosing to leave the TARDIS crew to avoid further violence.

The Doctor shatters the tension with a cold declaration of intent, abandoning his long-standing refusal to kill. Rejecting Tegan’s horror at murder, he frames Davros’ extermination as necessary duty to …

Tegan returns to the warehouse after initially leaving, her face streaked with tears. She delivers a quiet goodbye to the Doctor and Turlough, the weight of the Doctor's mission now …