From the description:
"When a K9 search-and-rescue team discovers a woman's body tangled up with debris in the river, Scotland Yard superintendent Duncan Kincaid finds himself heading an investigation fraught with complications. The victim, Rebecca Meredith, was a talented but difficult woman with many admirers—and just as many enemies. An Olympic contender on the verge of a controversial comeback, she was also a high-ranking detective with the Met—a fact that raises a host of political and ethical issues in an already sensitive case.
To further complicate the situation, a separate investigation, led by Detective Inspector Gemma James, Kincaid's wife, soon reveals a disturbing—and possibly related—series of crimes, widening the field of suspects. But when someone tries to kill the search-and-rescue team member who found Rebecca's body, the case becomes even more complex and dangerous, involving powerful interests with tentacles that reach deep into the heart of the Met itself."