Becca and her sister, Rosaline, have forged ahead with family lives and careers, growing distant through time and circumstance. But when the body of an older woman is discovered at sunrise on Laxey Beach in the Isle of Man, it brings devastating news for the sisters.

Suranne Jones, Eve Best, Stockard Channing, Hugh Quarshie, George Costigan, Dean Lennox Kelly, Andrew Knott, Rhiannon Clements, Yasmin Davies