Episode 1 (S01E01)

Marcella Backland, a former detective, is devastated when her husband Jason abruptly departs, revealing that his feelings for her have faded. Grieving the loss of her marriage, she decides to return to the Metropolitan Police's murder squad, a role she abandoned a decade earlier to raise her second child. Driven by her instincts, she revisits a case linked to a serial killer, determined to uncover the truth and reignite her passion for justice.