Excellent 2nd book in this series by Adriana Anders.
Slightly more of a Romantic Suspense edge to this book.
ATF agency Clay Navarro is in hiding before a trial where he is the prime witness. He needs the services of Dr Georgette Hadley to remove tattoos gained whilst he was undercover in a vicious motorcycle gang.
Throw in some heavy PTSD for him and her being a widow, you have a beautiful story of two people fighting their pasts to find a future together.