Morse and Lewis investigate the death of Laura Poindexter, an American tourist who is part of an exclusive 我的好妈妈在线高清免费tour group visiting Oxford. Missing from her personal effects is her jewelry, including the Wolvercote Tongue which she was going to donate to the Ashmolean Museum. The pathologist determines that she died of natu山西万荣事件qvodral causes, but Morse feels there's something not quite right. The mystery deepens when Theodore Kemp, the Ashmolean's expert on the Wolvercote Tongue, is found dead and Mrs. Poindexter's husband goes missi樱雪丸ng.