Witch Cats of Cambridge Mystery Books in Order

At the center of the Witch Cats of Cambridge books is Becca Colwin, a young woman trying to put her life back together in Cambridge. She is newly unmoored, curious about witchcraft, and eager to believe she might have some power of her own. What she does not know at first is that the real magic in her household belongs to her three cats, Harriet, Laurel, and Clara.

The cats know more than the humans do.

That simple switch gives the series its charm. Becca is the sleuth on paper, but the cats are often the first to sense danger, bad intentions, or a magical disturbance. They have distinct personalities, they do not always agree, and their loyalty to Becca can make them brave, stubborn, and occasionally meddlesome. Their feline view of the world keeps the books playful, even when a body turns up.

Cambridge matters here, too. These stories live in a version of the city where ordinary apartments, side streets, and small businesses sit right beside a hidden magical community. Becca moves through covens, clients, and local gossip while trying to build a steadier life for herself. In A Spell of Murder, that means learning that a friendly spiritual circle may be hiding dangerous secrets. In An Incantation of Cats and To Conjure a Killer, the world opens up further, with suspicious newcomers, poisonous roots, dead bodies, and problems that blur the line between the everyday and the enchanted.

The larger thread across the series is Becca's growing confidence. She starts out looking for direction and for proof that she matters. The books keep testing her, not just with murder but with questions of trust, friendship, romance, and belonging. Because the cats are powerful in ways she is not, Becca also has to learn humility. She cannot control everything, and she definitely cannot control a cat. That turns out to be part of the fun.

These are cozy mysteries, but they are very cat-forward and lightly paranormal rather than spooky or epic. The tone is warm, a little witty, and easy to sink into, with real stakes underneath the charm. If you like your mysteries with found family, magical side currents, and cats who are more competent than most people in the room, this series is a very good place to settle in.