Vural's betrayal and downfall as Styre's disgraced lieutenant, forced to witness his former comrades' suffering and ultimately crushed beneath his commander's wrath

The Doctor interrupts three human captives—Erak, Krans and Vural—as they attempt to climb away from Styre’s lair with stolen Sontaran equipment. Recognising their nervous compliance to Vural’s command to keep …

Styre arrives outside the spacecraft with Krans, Erak, and Vural as his captives, the final batch of test subjects for his brutal experiments. When Vural panics about being included, he …