The Left Hand of God by Hugh Holton

Chicago police Chief of Detectives Larry Cole faces his biggest challenge yet. Joining Larry Cole is Lieutenant Blackie Silvestri, the beautiful and smart investigative journalist Kate Ford, and Cole's seventeen-year-old son, Butch, who is visiting his father for the summer. When Butch visits a nightclub on the north side, he stumbles across a plot to fix an Olympic basketball game between the US and the Italian national team. Meanwhile, Cole has uncovered a plot to assassinate the sultry newscaster Orga Syriac when he escorts her to a political ball. The would-be assassin, a demented Catholic priest, is intent on stopping her from exposing a secret right-wing organization.