Capturing the Queen by Sarah Andre

Restoration artist Sean Quinn is perfectly content spending his downtime devouring classical literature, while keeping his OCD and fourth-degree black belt under wraps. But when his FBI agent brother coerces him into investigating stolen artifacts, Sean becomes the target of a ruthless smuggling ring that funds terrorists.
Gretch Allen, a beautiful man-magnet, hides a world of hurt under her icy exterior. When Sean rescues her from a stalker, she discovers her co-worker has an alpha-hot fire burning beneath his geeky exterior. As barriers between them begin crumbling, however, she accidentally places herself in much more extremist danger.
Unable to stop the unraveling events from turning deadly, Sean must conjure his inner hero to save his city and capture the heart of the queen.