Monica Kennedy Books in Order

The Monica Kennedy books are dark Scottish police procedurals built around one central figure: DI Monica Kennedy, a driven Inverness detective who keeps getting pulled into cases that feel bigger, stranger, and more personal than they first appear. The series opens with From the Shadows, where the murder of a teenage boy on the Highland coast suggests a killer who is planning far ahead. From there, the books keep Monica in the line of fire, working cases where missing people, staged bodies, and old secrets have a way of colliding.

Monica is the reason the series holds together. She is tough, observant, and stubborn in the useful detective sense, the kind of character who keeps going when everyone else would rather call it done. But Halliday does not write her as a machine. She is also a single mother, and the strain of police work follows her home. That gives the books emotional weight without slowing the investigations down.

The landscape matters.

These stories are set around Inverness and the wider Highlands, and the setting is never just decoration. Coasts, forests, mountain roads, dams, prison grounds, and marshland all shape what happens. People can disappear easily here. Witnesses are scattered. Weather and distance get in the way. The result is a series that feels both grounded and eerie, with beauty and threat sitting side by side.

Each book has its own case, but there is a loose ongoing thread through Monica's life and work. Dark Waters brings her back to Serious Crimes after time away and throws her into a brutal investigation involving missing people and a killer who seems to be working to a pattern. Under the Marsh reaches back to one of Monica's older victories, when a notorious serial killer sends her a map that may point to another buried crime. Across the series, past trauma never stays neatly in the past.

Expect a mix of police procedure and psychological suspense, with a real streak of menace running through it. These are not cozy mysteries. Halliday likes pressure, moral mess, and the uneasy feeling that the truth may be worse than anyone first guessed. At the same time, the books stay readable and plot-led, so the darkness is balanced by steady forward movement.

If you are deciding where to begin, publication order makes the most sense: From the Shadows, then Dark Waters, then Under the Marsh. That way you get Monica's world as it opens up, along with the personal history that keeps deepening around her. The first book has also been adapted for television as The Dark, which gives you a good sense of how strongly this series leans on atmosphere, character, and a killer hiding in plain sight.