One Good Turn, Part 1

S1 E3: Brodie is the lone witness to a possible drowning in the Firth of Forth when he spots a woman's body in the water - but is unable to prevent it from floating out to sea. The police appear less than enthusiastic about investigating, so Brodie decides to do it himself. In other events, a crime novelist intervenes in a case of road rage, and a comatose crook's wife and dominatrix bond unexpectedly.