Riverboat Justice. Dions Enigmas, #3

A skilled New York mobster, Caliano, who was thrown out, set his sights on taking over St. Louis riverboat gambling and other criminal activity. And while at it set his sights on famous attorney Dion Vine to represent him. That was a big no. Dion and his wife Aida and team of investigators will take him down. Caliano, having defied New York law, thinks he's untouchable by the law anywhere, and can do anything.
He hasn't met Dion's team. Together with a daring expert in war camouflage and illusion, and a recent law graduate who has demonstrated superior investigative talent (from the same series novel "The Devil Did It") the team drives Caliano out. Dion is an attorney who likes to make a difference, but his clients are impossibly complicated and hiding everything to protect each other. And the law presents its own complications.
He uses investigators to find out what his clients are hiding, and legal skill to finesse the law. A mobster is no exception, just another challenge. A big challenge.