The Inside Man by Jeff Abbott
When Sam Capra's best customer - and friend - is murdered outside his Miami bar, Sam decides to seek justice. Determined to figure out the connection between his friend's death and a beautiful stranger, Sam infiltrates the Varelas, one of Miami's most prominent - and dangerous - families. He faces a powerful but unstable mastermind intent on dividing his business empire between his three very different adult children. It's not long before he realises that these formidable siblings may hold murderous secrets of their own.
Sam is inexorably drawn into this shadowy family drama, amplifying painful echoes of his own shattered relationships as he goes undercover. And in his quest to unearth the killer before his cover is blown, Sam discovers one of the world's 'dark corners'; a place where laws are inconsequential, and no amount of money or power can save you...