Dr. Brewster's suicide takes a particular twist when the pathologist determines that he had also been bound and gagged. The Brewsters, both medical doctors, ran a private clinic and their son John, who lived at home, is doctoral candidate in philosophy. One possible suspect is Michael Steppings who threatened the Brewsters and their nurse after his daughter suffered severe side-effects and is now in a vegetative state from a botched operation two years previously. The forensics lab determines that one of Steppings's threatening letters was altered and Morse learns that Brewster may at one time been having an affair, so he must consider another possible motive for murder.。老谢愣了一下，然后轻描淡写的说噢，井蛙啊，这个是从镇上买的，什么井蛙不井蛙的，都是一种说法，也就是普通的青蛙，也没什么好吃的啊，你们要想吃的话，明天我去镇上跑一趟。看看有没有那个运气，买到井蛙。……