Stuart G. Yates 
Burned Up [EPUB ebook] 

Real estate agent Ryan Chaise lives a quiet life in Southern Spain with his beautiful girlfriend. Everything in his life seems perfectly ordinary.
Except that Ryan has a secret.
A former agent for the British Secret Intelligence Service, Chaise gets embroiled in a world of drug-pushers and gangsters after accidentally killing a petty criminal absconding with a package of cocaine. Forced to protect himself and his family, Chaise’s old skills come to the fore as danger and death tolls rise.
Who to trust, who to ignore, who to kill. Chaise has many choices, and he’ll need to make the right ones to survive. It’s going to be a difficult balancing act.
But does he still have the tools to make it?