第七季共2集
　　1、The Murder of Roger Ackroyd 罗杰疑案（罗杰·艾克罗伊德谋杀案）
　　2、Lord Edgware Dies 人性记录

　　A year after her murder, the police re-open the case of Yvonne Harrison when they receive an anonymous letter implicating a burglar, Harry Repp, who is about to be released from prison. Supt. Strange assigns the case to DS Lewis, who is chafing at the bit awaiting his promotion to Inspector. Morse has been ill and has only just returned to work. He steps on Lewis' toes by involving himself in the case, but as the body count rises, Morse finds himself in charge of investigating a woman who had many affairs with many different men. When he learns that the dead men were in possession of large amount of cash, he suspects they were blackmailing her murderer.

　　Sam's cases involve a series of revenge killings by a former Auschwitz prisoner; the mysterious deaths of teenage girls killed 15 years apart in Norway; a suspicious suicide and a beautiful Nun in a convent by the sea - very different stories, all employing Sam's expertise to the maximum.

雷掌管着北伦敦最强大的犯罪团伙，他的侄子裘德是一位出色而成功的成员。 裘德儿时的朋友强尼带着一个想法来找裘德，他想向雷推销； 裘德不愿将友谊与生意（和家庭）混为一谈，但他确实安排了一次会面。 雷带走了强尼（他利用自己的快递员工作偷信用卡），但强尼很快发现自己很无聊：与打架、破坏和混乱相比，该团伙更感兴趣的是四处游荡和计划雷的婚礼。 强尼想要暴力，所以他一再试图与雷的帮派在伦敦南部制造麻烦。 他会成功吗？ 如果他这样做了，他会在战争中找到荣耀吗？