Title: Mercy Killing - John Lescroart - book
Summary :
Sal Russo, suffering from an incurable illness, is found dead, an empty vial of morphine at his side; the suicide hypothesis seems convincing. But disturbing details lead Abe Glitsky and the Homicide squad to take a closer look at Sal's son, Graham Russo. Indeed, Sal Russo had just reconnected with his son, and, more importantly, a large sum of money has just been found in Graham's home. Dismas Hardy, charged with his defense, has no easy task. Did the good son help his elderly father die? Was it a charitable act worthy of respect, or a sordid crime that must be punished? Unless the truth lies elsewhere...