No Man's Land by Sara Driscoll

 Urbexing:  Urban exploration, usually of abandoned or nearly inaccessible man-made structures.

From the blurb:
"For Meg Jennings and her K-9 companion, Hawk, exploring the ruins of a deserted building is an exciting way to sharpen their skills without the life-or-death stakes they face as part of the FBI's Human Scent Evidence Team. But deep in the echoing rooms of an abandoned asylum, Hawk finds the body of an elderly woman. The victim couldn't have made her way into the derelict building on her own. Before forty-eight hours pass, Meg learns of more cases of elders found dead in neglected urban structures.

There's not enough evidence to link the deaths--yet. But Meg scents a pattern, and when she gets word of another senior gone missing, she and Hawk don't hesitate. Meg is sure a murderer is hunting the elderly, and she can prove it if she can just find a connection. It will take the expert coordination of her whole team, along with help from Clay McCord and Todd Webb, to uncover the means, let alone a motive. And to stop someone who has operated in the dark for so long, Meg will need to risk more than she has to give . . ."

My thoughts:
This is a fun series that just keeps getting better with each book. My favorite parts, of course, are all the ones involving Meg's dog, Hawk, and his work as an FBI search-and-rescue dog. In this one, he and Meg have to search several old and abandoned buildings, which made for some very interesting and suspenseful settings. I also loved how the author included urbexing terms and definitions at the beginning of every chapter. Who knew urbexing was even a thing?

The mystery in this one is unique and compelling. I really enjoyed watching Meg and the others figure it out.

And those interesting friends and co-workers of Meg's? They're one more reason I keep reading this series. I like how Meg's sister, Cara, and Clay McCord, a Washington reporter, add insight (and some mad research skills) in helping Meg solve her cases. And I really like Meg's interactions with Todd Webb, her fire-fighter boyfriend. They make a good team. And it's because of these relationships, and how they grow and change over time, that it's best to read this series in order, starting with the first book, Lone Wolf.

Happy Reading!