Agatha Christie built the template. The closed setting, the cast of suspects, the slow revelation of motive, the satisfying click of everything falling into place at the end. If you grew up reading Christie — or came to him later and worked through the Poirot and Marple novels in a sitting — you understand what good crime fiction does at its best.
But sometimes you want something harder-edged. A world where the violence has weight. Where the protagonist doesn’t solve the puzzle from the safety of an armchair.
That’s where Frankie Armstrong comes in.
What Christie Got Right
The Christie formula works because it respects the reader. The clues are there. The characters are distinct. The setting is carefully drawn. And beneath the civilised surface — the country house, the village, the ocean liner — there is always something rotten. Someone wanted someone dead badly enough to do something about it.
That moral engine — the idea that ordinary life conceals extraordinary darkness — is what all great crime fiction shares. Christie located it in the drawing room. The Frankie Armstrong series locates it in the sun-drenched wealth of Southwest Florida, where the manicured lawns and waterfront properties hide the same human rot Christie was always writing about.
The Same Instinct, A Harder World
Frankie Armstrong isn’t Poirot or Miss Marple. He doesn’t solve crimes by sitting in a chair and applying him little grey cells while others bring him tea. He’s a British ex-soldier, physically capable, trained in actual threat assessment, and he gets him hands dirty.
But the investigative instinct is the same: look carefully, trust no one’s version of events, follow the money and the motive, and refuse to accept the comfortable explanation when something doesn’t quite fit.
Christie readers will recognise that quality in Frankie immediately. The difference is the world he operates in — one that hits back.
Why Older Readers Often Enjoy This Transition
There is a particular pleasure that comes from reading a thriller that trusts your intelligence. Christie readers know that pleasure well — he never condescended to him audience. The Frankie Armstrong series is written in that same spirit: the plots are layered, the characters have genuine depth, and the setting is rendered with real care.
If you’ve been reading crime fiction for decades, you’ve earned something that doesn’t insult your experience. You Owe Me delivers that — with sharper edges than Christie, but the same fundamental respect for the reader.
— Kerry Costello is the author of the Frankie Armstrong series. Find out more at kerrycostellobooks.com.