Look Behind You (Kendra Michaels 5) by Iris Johansen
THE KILLER IS IN HER SIGHTS...AND ON HER TRAIL
A serial killer is on the loose in San Diego. With each murder, random and mystifying objects are left behind. In this confusing array of evidence, only one thing is clear: each case requires the skills of Kendra Michaels, a hired gun for the CIA and FBI. Kendra, who was blind for most of her life before a revolutionary surgical procedure gave her sight, uses her acute powers of observation to solve some of the country's most complex crimes. And this one is no exception.
When the FBI discovers that the left-behind objects are souvenirs of previous unsolved serial murder cases, Kendra is called in to help. The latest crimes feature "holdback" characteristics never disclosed to the public--meaning that one single killer was behind the nation's most notorious unsolved cases. . .and is back to challenge and taunt Kendra. As the body count rises, and a "dream team" of profilers becomes the newest target, it's up to Kendra to defeat a psychopath whose terrifying plan has been years in the making.