A detective travels to the remote Isle of Harris to solve a murder, only to find herself confronting unexpected personal connections that complicate her investigation.

A detective's suspicions about a wealthy man's account lead nowhere without proof. The case takes a turn when his son's alibi raises red flags, shifting the inquiry's direction.

With the evidence at the sheiling matching Sir Douglas' new account of the night, Kat can't let her theory go, Kat starts to suspect that the youngest son Ruaraidh's guarded behaviour at the sheiling yesterday was concealing something.