新一季中，Chandler团队终于走出了白教堂范围。
首次命案发生在白教堂附近隧道的凶杀案，尸体呈捆绑状态，中毒且形容可怖，给伦敦东区恐怖传说又增新料。残酷的罪行使得人们惶恐不安，这次又要靠Jones（鲁伯特·彭利·琼斯 Rupert Penry-Jones 饰）带领以警探Miles（菲尔·戴维斯 Philip Davis 饰）为首的chandler团队找出罪案的历史渊源，从凌乱的线索中找出真相。即使案件研究学者Edward（史蒂夫·佩姆伯顿 Steve Pemberton 饰）从300年的伦敦东区黑暗故事中淘出有用的线索，他们又能否用过去的噩梦来解决现在的罪案？在白教堂血案中，历史不是墙上的钉子，它可能是致命的……
“In the early 1990s, at the height of the international war on drugs, the government agency in charge of Britain’s borders, Her Majesty’s Customs and Excise, realized that they were losing the battle against drug smuggling. Their solution was extraordinary,” reads the logline. “In a top-secret operation, a small team of British Customs employees were sent undercover. Their task – to infiltrate Britain’s most dangerous drug gangs.” “They were not trained spies. These were ordinary men and women, plucked from ordinary lives around the U.K, put through a basic training regime then told to build new identities in the criminal underworld. These identities were called Legends.
改编自维克托·拉瓦列2013年的小说《The Devil in Silver》。聚焦搬运工人Pepper（丹·史蒂文斯 Dan Stevens 饰），因为坏运气和坏脾气，他被送到了一所名为New Hyde的精神病院，里面满是被社会遗忘的人。Pepper想要获得自由，就必须面对与他作 对的病人、怀着阴森目的的医生，甚至恶魔本人。这里是地狱般的地方，任何事情都不是表面那样，Pepper必须直接面对一个以New Hyde里人们的苦痛来蓬勃壮大的存在，但这样可能会证明：最可怕的恶魔恰恰是他自己。
