See link to goodreads review

FBI agent and neuroscience researcher Sayer Altair investigates the death of a woman found in a cage, with evidence that there may be a second woman at an unknown location. I'm not 100% sure I liked the ending (the "who"), but the majority of the book was excellent. I'd give it 4 stars overall. I don't know if this is part of a planned series, but I would definitely read a second book if there is one.

LOVED this serial killer story! Not expecting the end. Couldn't put this book down. Highly recommend. I look forward to reading more by this author. Thank you #NetGalley, #StMartinsPress, #MinotaurBooks for the ARC #EllisonCooper #Caged

When FBI agent and neuroscientist Sayer Altair is assigned the girl in the cage case, she is thrown into a quagmire of false leads, defiant politcos and is stymied from the onset in trying the find the killer. When it becomes known that another has been taken the pace to find her, stop and capture the killer, quickens.
It was delightful to read about an FBI agent not only with a science background, but who was a strong female protagonist without being snarky or overbearing, was, smart and African American. I'd recommend this book to anyone who likes FBI-driven books. Some of the descriptions were pretty graphic, but didn't deter from the story at all.

After the death of her fiancee, Sayer Altair, an FBI neuroscientist, throws herself into her work, which involves figuring out why serial killers brains operate differently than the rest of the population. Research will put her behind a desk and away from everyone. But Sayer is called in to work a case where a victim was starved to death inside a cage, the fact that the victim was the daughter of a U.S. senator doesn’t make her job any easier. The case is splashed all over the papers and the 24 hour a day news shows and Sayer is under enormous pressure to solve the case. When another woman is abducted, Sayer knows that she hasn’t got the luxury of time, if she doesn’t find the answers fast, another woman will die. This is a fantastically good read, with a heroine I hope to see more of and one heck of a twisted killer