《刘易斯探案：黑暗降临》是一部由英国地区于2010年出品的剧情类电影。该片由柯林·德克斯特、罗素·刘易斯担任编剧，尼古拉斯·雷顿亲自指导拍摄。主要演员包括凯文·沃特利、克莱尔·霍尔曼、妮雅姆·库萨克、露西·格里菲思、Brodie Ross、Lauren O'Neil、Louise Hunt、约翰·塞森斯、Adam Levy、Alex Price、琳赛·巴克斯特、劳伦斯·福克斯、詹·穆瑞、罗恩·多纳基、丽贝卡·弗朗特、鲁珀特·格雷夫斯等英国著名影星。
One Halloween, Ligiea Willard, stem-cell researcher and ex-roommate of Laura Hobson, is killed on her way to a reunion with Laura and another old friend named Ellen Jacoby. Her work attracted protests, and she was about to go public on shady practices at her institute. Psychic Ursula Van Tressell senses the killing and exorcises a house where the three women once lived at its owners' request. The next day, a resident is found slain, and a message on the fridge urges to find Mary Gwilliam, who was also murdered after trying to phone Laura. Mary was a nurse at a mental hospital where another of Laura's roommates--and boyfriend--died. After an unsuccessful attempt to kill Ellen, Lewis, her boyfriend, realizes that Laura has not been honest with him.