Sanctuary

Sanctuary is book 14 in the Charlie Cooper series by Mark Dawson, the author of the bestselling John Milton series. Charlie Cooper is an ex-Group Fifteen operative who now works in private security, so the series is a spin-off from the main series. When a former MI5 operative is found dead in the nearby of the very safe Sanctuary, Charlie Cooper is sent in to investigate. Was it really an accident or someone got to the Sanctuary first? While he investigates, a second person is found dead, which is when Charlie knows that the Sanctuary is compromised and something much bigger and much more sinister is going on there. But he’s working outside of the official police investigations, and he has to find the killer before all is too late…

Sanctuary

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by Mark Dawson

Charlie Cooper series #14

published June 2026

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A secret refuge. A dead spy. A killer hiding in plain sight.

The Sanctuary is supposed to be the safest place in Britain: a discreet rehabilitation centre on the north-east coast where wounded soldiers, damaged intelligence officers and burned-out covert operators go to recover.

But when former MI5 officer Thomas Allbright is found dead on the rocks below the cliffs, Charlie Cooper is sent in undercover to find out whether it was really an accident.

What he finds is a closed community filled with secrets, trauma and people trained to notice every lie. Then a second body is discovered, and Cooper realises the deaths may be connected to something far bigger than the Sanctuary itself…

With the police closing in, his cover fraying, and an unlikely ally at his side, Cooper must expose the killer before they strike again.

Because in a place built to heal broken spies, someone is still playing the old game.

Supercharged action and adventure from a multi-million-selling-author. Sanctuary is a relentless Charlie Cooper novella that you won’t be able to put down.


Part of the Charlie Cooper series – see the full reading order on the Mark Dawson Books in Order page.