: 15-year-old Luke Armstrong, found strangled in a bathtub strewn with wildflowers, and young teacher Lily Marsh, discovered in a rock pool similarly surrounded by flowers.

The series is known for its atmospheric use of the Northumberland landscape.

(Brenda Blethyn): A curmudgeonly but brilliant detective dealing with the recent death of her father.

Depths - [s1e1] Hidden

: 15-year-old Luke Armstrong, found strangled in a bathtub strewn with wildflowers, and young teacher Lily Marsh, discovered in a rock pool similarly surrounded by flowers.

The series is known for its atmospheric use of the Northumberland landscape.

(Brenda Blethyn): A curmudgeonly but brilliant detective dealing with the recent death of her father.