Night tremors : a Rick Cahill novel / Matt Coyle.

Enhanced descriptions from Syndetics:

Anthony, Shamus, and Lefty Award Finalist Powerful forces on each side of the law have Rick Cahill in the crosshairs Nightmares of the man he killed two years ago still chase Rick Cahill through his sleep. The memory of his murdered wife haunts him during waking hours. His private investigative work, secretly photographing adulterers, paid for his new house but stains his soul. When an old nemesis asks for his help to free a man from prison, a man he thinks is wrongly convicted of murder, Rick grabs at the chance to turn his life around. His investigation takes him from the wealthy enclave of La Jolla to the dark underbelly of San Diego. His quest fractures his friendship with his mentor, endangers his steady job, and draws the contempt of the Police Chief who has tried to put Rick behind bars forever. With the police on one side of the law and a vicious biker gang on the other, all trying to stop him from freeing the man in prison, Rick risks his life to uncover the truth that only the real killer knows--what happened one bloody night eight years earlier. Perfect for fans of David Baldacci While all of the novels in the Rick Cahill PI Crime Series stand on their own and can be read in any order, the publication sequence is: Yesterday's Echo Night Tremors Dark Fissures Blood Truth Wrong Light Lost Tomorrows Blind Vigil Last Redemption (coming November 2021)