David Callan walked out of The Section and swore he had left British Intelligence — and his reputation as a ruthless killer — for good.

Until Hunter, Callan’s old boss, demands his return. He gives him an ultimatum: take on their new case, or become The Section’s next target.

Callan has no choice.

He prepares for a job he doesn’t want with Lonely, his only trusted ally, and heads to Crete to rescue a young woman held prisoner.

But this woman is no ordinary captive. She’s the daughter of a Greek political exile hell bent on regaining power — at any cost.

Now the already blurred edges of right and wrong begin to merge, while the true threat awaiting Callan and Lonely lurks in the shadows.

Who is the real puppeteer behind it all? Callan is about to find out.

Fans of Frederick Forsyth, Mark Dawson, Mick Herron, John le Carré and Len Deighton will be gripped by this classic thriller series full of shocking twists.

MEET DAVID CALLAN

Sardonic, complex and ferociously downbeat, David Callan is a working class former soldier recruited into the dark and elusive world of British Intelligence. He is their most efficient assassin and, as a result, has many enemies and very few friends. Frighteningly good at what he does, Callan has begun to question his work. But for an assassin of his calibre, leaving is never an option.

Portrayed by actor Edward Woodward in the classic television series (1967-72), David Callan is an iconic figure of crime fiction.