Never Again — M.A. Rothman

From a USA Today bestselling author: Crime world fixer Levi gets mixed up with a widow who believes her husband was murdered -- and the police are covering it up. A riveting thriller about power, corruption, and deadly politics.
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Brief Synopsis:
Levi is a fixer for one of the New York Mafia families.

However, things take an unexpected turn for this mafioso when Rivka Cohen walks into his life.  The police are calling her husband's death a suicide even though she has evidence that he's been murdered.
In NEVER AGAIN, Levi is thrust into a world filled with old grudges, bigotry, international politics, and treason.

With evidence of a long-festering plot that has its roots in Nazi Germany, Levi knows this is something he can't ignore.

However, he soon learns that it's the criminal justice system itself trying to bury the case as well as anyone who pursues it.

This may be too much for even him to handle.