Edge of Honor by Trish Loye

An Esteemed Scientist.
Dr. Charlotte Singh loves her job as head of research for EDGE Security, but she secretly yearns for field work and the promise of adventure it holds. At a conference in London, Charlotte finally gets her chance. But working an op isn’t everything she imagined, and the one person who can help her is a dangerously rugged Scotsman who isn’t interested in being part of anyone’s team.

A Disgraced Soldier.
Jack Sinclair was kicked out of the British SAS after a mission gone horribly wrong. Now he’s hunting whoever is responsible for the deaths of his men and completely focused on finding justice for his friends. He has nothing left but his mission and he won’t let anyone, not even a sexy scientist with a smart mouth, interfere with it.

Opposites don’t just attract, they explode.
But when Charlotte’s life is threatened and she’s isolated from her team, Jack can no longer shut out the world or abandon the feisty woman who ignites something inside him. Hunted by terrorists, will Jack and Charlotte have to sacrifice themselves and their burgeoning attraction to the flames? Or will the city of London pay the price?