Flash and Bones by Kathy Reichs

Temperance Brennan, forensic anthropologist, assigned to the Medical Examiner’s Office in Mecklenburg County, investigates a murder in Charlotte, North Carolina in this 14th book in the series. During NASCAR, a body is found in a barrel next to the Charlotte Motor Speedway. While trying to solve a murder, Brennan is also doing some investigating into why the fiancé of Brennan’s ex-husband, Pete, seems to be unhappy with her upcoming wedding plans.

The book starts:

“Looking back, I think of it as race week in the rain. Thunderboomers almost every day. Sure, it was spring. But these storms were over the top.
In the end, Summer saved my life.
I know, Sounds bizarre.
This is what happened.”

Kathy Reichs has a website: http://kathyreichs.com/