James Purefoy stars as William Travers, a criminal barrister who is recovering from a traumatic series of events that have shaken his belief in the legal system. On the surface, Travers is a picture of success; an accomplished criminal barrister happily living with his wife (played by Dervla Kirwan) in rural Suffolk. However, Travers is still recovering from events in his past when he is drawn into a case that involves his old friend Martin Newall (Nathaniel Parker), who faces conspiracy and murder charges while at the same time being investigated by a vicious and vengeful detective DS Mark Wenborn (Creed Miles). The five-part series from acclaimed writer Anthony Horowitz (Collision, Foyle's War) is a story of friendship, conspiracy, betrayal and murder as well as a critical look at the way the legal system operates.
1897年，大韩帝国时代动荡混沌，时有不同罪案发生，别巡检调查队四出调查，找寻破案的线索。 别巡检第2季的时代背景为1897年大韩帝国的国号宣布之后，比第1季还要迟些。高宗自俄罗斯回国后自称为皇帝，由此朝鲜便变为帝国，以阐明国家的自主性和独立性。并且施行了财政、教育、军事等几乎全方位的光武改革，令朝鲜向现代化迈进了一大步。因此这个时期应该是比第1季更为激动人心的时期，然而大韩帝国所追求的新价值，让国民看到的却是比任何时候都强大的同一与自主的混乱。
台湾青年顾亦航（刘恩佑 饰）带女友美媛（吉祥 饰）来大陆度假，给他们做导游的童瑶（金莎 饰）不幸被车撞伤。车祸后医生检查出童瑶患有“脊髓小脑变性症”，这对她和母亲何亚洁（杨贵媚 饰）无疑是一声晴天霹雳，何亚洁心生绝望，而女儿的男友石磊（杨烁 饰）也绝情离去。心生愧疚的亦航为了看望童瑶每周奔波于金门和厦门之间，他不断鼓励想放弃治疗的童瑶，不要放弃活下去的希望。时间一久，他对童瑶产生了爱恋之心。当亦航的父亲（岳跃利 饰）得知儿子要与患病的童瑶结婚，大发雷霆，声明要跟儿子断绝父子关系。而何亚洁也不赞成亦航的想法，她怕处于生命倒计时的女儿在最后的时光里留下心灵阴霾，但亦航决心已定......
