Rain falls like mercy / Jack Todd.

Enhanced descriptions from Syndetics:

Set against the sweeping backdrop of World War II, Rain Falls Like Mercy is a gripping depiction of a family and a country touched by the grand violence of war, the senseless violence of crime, and the intimate violence of the heart.

IN THE TRADITION OF TRUE CRIME narratives such as In Cold Blood, acclaimed author Jack Todd's new novel grips the reader from the first pa≥ and as it spans continents and generations of one family, its taut and shocking undercurrent of violence builds to a stunning crescendo. Todd's first novel, Sun Going Down, which introduced the Paint family, won praise from reviewers and major authors such as Michael Korda and Michael Blake. His second novel, Come Again No More, recounted the Paints' saga of triumph and tragedy through the Great Depression, inspiring the Ottawa Citizen to label Todd "a first-rate novelist with a tender heart."

Rain Falls Like Mercy opens with the murder investigation of a young girl in Wyoming in mid- 1941. Tom Call, the young sheriff running the investigation, falls in love with Juanita, the wife of Eli Paint, whose son Leo and grandson Bobby Watson are on duty with the U.S. Navy. Almost overnight, the case is derailed by the Japanese attack on Pearl Harbor, disrupting the lives of all involved. Bobby mans an antiaircraft gun during the attack. Tom joins the U.S. Air Force and is deployed to England to fly bombers, still trying to pursue his murder investigation. His suspicion falls on Pardo Bury, the psychotic son of a wealthy rancher in Wyoming.

As Pardo and Tom make their ways to their inevitable and shattering confrontation, Rain Falls Like Mercy displays Todd's uncanny ability to zero in on his characters' emotional lives while simultaneously painting a sweeping picture of the historical events that shape their destinies.