Harry Sullivan's overconfidence and disregard for warnings lead to repeated life-threatening dangers

Harry and Sarah land on a barren Earth where Sarah senses danger but Harry dismisses her intuition. While overlooking a ridge, a flicker of movement draws Sarah’s attention. Harry flatly …

Harry scrambles up the ruined cliffside in pursuit of the Sontaran conspiracy, his urgency overriding caution. The unstable ground gives way beneath him; one misstep sends him sliding down the …

The Doctor ignores Sarah’s warning and plunges recklessly into a collapsing pit after speculating about subterranean escape routes, triggering a cave-in that leaves him trapped below. As Sarah’s cries for …