Emotions are running high, as Seattle is covered by a blizzard and Travis is forced to make the toughest call of his career. And with lives on the line, the crew face up to some hard truths. Elsewhere, Ben has rising suspicions about a colleague.

Vic and Travis' friendship is put to the test as they respond to calls to help two best friends in need; Jack realises he has a greater impact on Marcus than he thought; new details about Travis' late husband's tragic death are revealed.