I don't know exactly how this book is categorized, but to me, it was a magical, historical cozy. This book takes place in a post-Civil War era where Black people are finally free to live and to use their magic. During the Civil War Hetty and Benjy were conductors on the underground railroad. These days they live in Philadelphia where Hetty is a seamstress and Benjy is a blacksmith.
They also solve crimes the white establishment can't be bothered to try and solve. That's where the murder mystery comes in--plus they practice sigil magic. Hetty is still searching for her sister who was captured during their escape from a plantation. Benjy and Hetty are married by it's a marriage of convenience, not love.
In the first book in this new series we are introduced to an interesting and quirky cast of characters, we learn what motivates Hetty and Benjy and what they are up against. The book is told from Hetty's point of view, I liked her voice and her opinions. She is a quintessential amateur sleuth and she has a little magic so I don't get too upset when she puts herself in a tight spot.
If you like magical cozies, or historical cozies, I really think you should check this book out, it's longer than a standard cozy and it's described as fantasy fiction---but I know a new kind of cozy when I read one and this is a wonderful one!
4 Stars for The Conductors by Nicole Glover. Add it to your TBR!