The Perfect Girl
How do you stop a killer no one believes exists?
DS Kat Ballantyne wants to know why a perfect girl like Rosie Duggan would jump to her death from a multistorey car park.
Everyone is saying she took her own life. But Kat is unconvinced. Girls like Rosie—bright, popular, well adjusted, and with her whole life ahead of her—don’t fall from tall buildings.
Unless someone pushes them.
When a second student dies the same way, Kat is the only one asking the hard questions.
As she digs deeper, a disturbing pattern begins to emerge. With loyalties fracturing and powerful enemies circling, shocking DNA evidence leads to a surprising suspect.
But has Kat really found the killer? Or has she just been played?
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Andy Maslen
Andy Maslen is an author whose gripping thrillers and sharp, fast-paced narratives have captivated readers around the world. With a knack for creating high-octane, edge-of-your-seat plots, Andy's novels draw readers into a world where danger lurks around every corner and nothing is quite as it seems.
Born and raised in the UK, Andy's early career was in marketing and advertising, where he honed his skills as a writer, learning how to grab attention and keep people hooked. But after years of crafting ads, he decided to turn his hand to something more personal—fiction. His transition from the world of advertising to the realm of suspense and thriller writing was a natural one. The same instincts that made him a successful copywriter—an understanding of pacing, suspense, and compelling characters—became the backbone of his novels.
Detective Kat Ballantyne
In the gritty underbelly of the city, where corruption runs deep and danger is never far behind, Detective Kat Ballantyne stands as an unflinching force of justice. The Detective Kat Ballantyne series invites readers into a dark world of suspense, where every case is a puzzle, and no one is as innocent as they seem.
Kat is a seasoned detective with a razor-sharp mind and an unwavering moral compass—traits that both serve her well and complicate her personal life. Tasked with solving cases that range from heart-stopping murder mysteries to complex conspiracies, Kat’s determination to uncover the truth often pushes her into dangerous territory, where she must confront not only the criminals she pursues but the ghosts of her own past.
Detective Kat Ballantyne consists of six books and series is set to expand with the upcoming release of one more book. The current recommended reading order for the series is provided below.

