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The Beast Must Die
该剧改编自英国演员Daniel Day-Lewis的父亲Cecil Day-Lewis在1938年出版的同名小说。故事讲述了一个悲痛的母亲，渗透到了一个男人的生活之中，她认为这个男人是杀死自己儿子的凶手。原著简介比较不一样，可能剧集有大幅改动。 《他们最好的》编剧Gaby Chiappe负责剧本，《托尔金》导演Dome Karukoski执导。 《恶徒必死》是侦探Nigel Strangeways为主角的系列小说16本中的第4本，过去在阿根廷和法国都有电影改编。据最早的开发消息，鉴于原著系列的数量，这部剧可能会做成一部连续剧，而不是仅一季的迷你剧。
Frances Cairnes begins her search for the person who killed her six-year-old son in a hit and run. DI Strangeways arrives on the Isle of Wight, hoping for a fresh start after the death of his colleague.
Tracking down the man that she believes is responsible for the death of her son, Frances sets out to inveigle her way into his home as she plots her revenge. Struggling to deal with his PTSD, DI Strangeways’ takes a closer look at the investigation into Frances’ son’s death.
Staying on as a house guest, Frances must now work out how she is going to see her murderous plan through. Strangeways's suspicions over his predecessor's handling of Frances's case begin to grow.
As Frances becomes more embedded in the home, she makes progress with her plan: she's found her weapon. Things heat up for DI Strangeways as he becomes ever more convinced of the possibility of foul play.
DI Strangeways, blindsided by a surprising discovery, scrambles to find answers.
