I didn't read Skin After Skin, so the last new PsyCop book I read was Spook Squad which was FOREVER ago. To say that I've been impatiently awaiting this book is not an exaggeration, and it did not disappoint.
This is around the time in most long-running series where the author runs out of steam (if they hadn't already) and just start phoning in their books. Not JCP though. She keeps this series fresh, keeps finding new ways to challenge her characters and push their boundaries, and keeps delivering hilarious commentary on the absurdities of life. (Vic vs smartphone is my new favorite.)
I loved seeing Vic in this new environment at the FPMP. He finally starts to realize just how toxic things were at the precinct when his new coworkers are not only nice to him but actually excited to work with him, and some are genuinely in awe of him. It's a lot for him to adjust to. Along with that, he has a new assignment unlike anything he did when working homicide and he has to figure out how to work with Darla.
Darla is a great addition to the cast, and her history with Vic has a lot of possibilities for exploring not just their shared pasts but their ever-changing understanding of what it means to be a medium. Jacob also does some growing here, though not quite to the degree as Vic. He is not okay after the events in Spook Squad and has some anxiety to deal with. It's the first chink in his armor that we've seen and it brings him more down to Earth in his view of psychic abilities.
As for the mystery, the perp was pretty obvious from the get-go, and while we expect Vic to be clueless and obtuse, I was rather bemused that Jacob didn't start asking the necessary questions sooner. Thankfully, the mystery isn't the sole focus here. Vic's got his mediumship project and he's also starting to unearth some memories of his childhood and realizing that his fuzzy memories don't mean what he always expected they did. But they all tie together and it opens this whole new realm for exploration in future books.