Free Historical mystery--for your Saturday reading

A Layer of Darkness by R. A. Niles is set in 1945 San Francisco. Get it here. Here's the book's description: In 1945 during the closing months of World War II, British statesman Nigel Cunningham lies dead, burnt and smoldering in the fetal position on a cold garage floor in San Francisco. As the crime scene begins to reveal numerous irregularities, Police Inspector Andrew Johnson senses a twisted case of appearances and realities and a frightening truth ultimately revealed by the grisly corpse at his feet. After FBI agent Ryan Kinahan is brought in with a rush of justice to convict local war veteran Mario Romano, Johnson becomes convinced of federal corruption. He finds himself pitted against his lifetime nemesis of dirty cops, but at a new level as the case opens links going up the chain of command in war time politics.