第四季时间来到1930年代初期，故事在魏玛共和国开始崩溃的混乱中展开。

A private investigator is forced into a dangerous alliance with a killer. They will try to uncover a quiet town's grisly criminal underbelly and clear

康斯坦丁（奇诺•李维斯 Keanu Reeves 饰）生来就能看出游走在人间的恶魔与天使，这令年幼时的他十分痛苦，曾经自杀想以这种方式结束自己的痛苦。后来获悉了上帝与撒旦之间有过协议，谁也不能直接插足人间，只能间接诱使人们选择天堂与地狱，而自杀者不得上天堂，他便开始利用自己天赋的超能力帮助铲除人间的

A private investigator is forced into a dangerous alliance with a killer. They will try to uncover a quiet town's grisly criminal underbelly and clear

As she nears the end of her pregnancy, Itto and her in-laws find their lives turned upside down by a supernatural event.