Shots in the Dark (Pink Sofa Secrets #2)
Mel Sterling

Marine veteran Gardner Dawson is at loose ends when an IED cuts short his tour of duty in Iraq, leaving him an amputee. A temporary gig babysitting a bookstore for his best friends helps fill the void, but even with the distraction of the provocative barista next door, he faces the prospect of a future without the career that meant everything to him.
The last thing either of them wants is to team up against a con man and a dirty FBI agent, but when danger stalks Gilly, Gard's protective instincts blaze to life--and so does his heart. Someone's determined to learn Gilly's secrets, maybe at the cost of her life. That's not a price Gard is willing to pay. Not even if he has to put his own life on the line.
Shots in the Dark , book two of the Pink Sofa Secrets series.