His Path of Darkness
A killer hides deep in the darkness…DI Rob Marshall is stuck in Gartcosh, leading the new Behavioural Sciences Unit – a staff of one and a third – where he’s executing a fruitless hunt, profiling every single murder in Scotland just in case they’re serial cases.
But when a young Peebles woman’s body is discovered in Neidpath Tunnel, disused since the sixties, Marshall is called in to consult on a case on his old home turf. Paired up with his replacement, a cop who’s disinterested in the work, Marshall must tread a line between helping and not jumping to conclusions.
As the scope of the case wides, can Marshall find a killer who may have led many down his path of darkness? Or is Marshall on his own road to destruction?
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Ed James
Ed James is a Scottish author who writes crime fiction novels across multiple series and in multiple locations.
The books in his various series are intertwined. The author combined the Cull, Bain, and Hunter series into the Police Scotland series. Refer to the Reading Order item in the Join the Discussion section for the author’s suggested reading order.
Formerly an IT project manager, Ed filled his weekly commute to London by writing on planes, trains and automobiles. He now writes full-time and lives in the Scottish Borders with a menagerie of rescued animals.
DI Rob Marshall
DI Rob Marshall consists of nine books. The current recommended reading order for the series is provided below.

