Security Measures by Sara K. Parker

A killer lies in wait...and now she's in danger.

To halt a killing spree, bodyguard Triss Everett tightens security at the senior community where she volunteers - and makes herself a target. Her coworker, widower Hunter Knox, won't let the woman he cares about more than he should become the next victim. But working together to find the murderer in their midst is the most challenging job he's ever taken on - and the most dangerous.