Untold Damage by Robert K. Lewis

Mark Mallen has hit rock bottom.  Four years ago he had a glowing future.  He was a policeman, one of the best and rising fast.  He had a beautiful wife and a daughter he adored.  All that disappeared due to his own bravado.  Working undercover to bring down a drug ring, he decided that he couldn't play the part without using heroin himself.  He quickly became addicted, losing his job, his marriage and his child.

Now Mark just marks time from score to score.  He lives quietly, his police pension just enough to keep him going.  He expects nothing and has nothing to live for.  That is, until he hears the news about Eric.  Eric was his best friend on the force.  Like Mark, he left the police, got addicted, and even spent some time in prison.  But Eric had turned his life around after prison.  Mark can't believe he is dead.

Mark decided to try to kick his habit and find out what happened to Eric.  He has some help.  Detective Kane remembers Mark from his police days and gives him some help.  He also gets help from a new friend and some old ones.  Other bodies start showing up and Mark realizes he is also targeted.  Can he solve Eric's murder before he is killed himself?

Untold Damage is Robert K/ Lewis's debut novel.  Mark is a flawed character, but the reader can see through his addiction to the good that still exists inside.  The action is fast and furious, and the denouement is satisfying.  This book is recommended for mystery lovers.