Iris Anderson Books in Order

The Iris Anderson books are YA historical mysteries set in New York City during World War II. Iris is fifteen when her life is knocked off course: her mother has died, her father comes home from Pearl Harbor missing a leg, and the family drops from comfort on the Upper East Side to a much tighter life downtown. She is restless, sharp, and far more interested in solving problems than accepting what adults tell her.

She is also not especially easy to stop.

That is the engine of the series. Iris's father, or Pop, becomes a private detective, and Iris keeps finding ways to involve herself in his cases. In The Girl is Murder, that starts with a missing boy connected to her school. In The Girl Is Trouble, the cases get more personal, reaching into threats against Jewish students and the unsettled story of her mother's death. Each mystery stands on its own, but the larger pull comes from watching Iris and her father learn how to be a family again.

The wartime setting matters in every direction. Iris moves between neighborhoods, schools, and social circles, so readers get a wide view of 1942 New York, from public school hallways and dance clubs to detective work and home-front tension. Haines also uses Iris's Jewish identity, her mother's German background, and the city's class lines to show how war changes ordinary life. The books do not pretend the era was simple or clean. Grief, prejudice, suspicion, and money worries are part of the story from the start.

The tone is brisk, smart, and a little noirish, but it still feels grounded in a teenage voice.

Iris can be impulsive, nosy, loyal, and very funny in the way only a kid who thinks she is almost grown can be. That balance gives the series a nice edge. These are books about clues and danger, but they are also about embarrassment, crushes, friendship, and the slow shock of realizing that adults do not have everything under control. Iris is always learning that truth the hard way.

If you are looking for cozy, gentle mysteries, this series runs sharper than that. The emotional stakes are real, and Iris often pushes straight into situations that are bigger than she understands. Still, Haines keeps the books readable and propulsive, with clear plotting and strong period detail. The result is a set of mysteries that works both as teen detective fiction and as a story about growing up in a city at war.

What carries the series from book to book is Iris herself. She wants answers, but she also wants a place in the changed world she has been handed. That makes every case feel personal, even before it becomes personal in the literal sense. If you like historical mysteries with attitude, family tension, and a young sleuth who refuses to stay on the sidelines, Iris Anderson is easy to root for.