当红一时的传奇编辑，被业界有实力的漫画出版社邀请，委以总编之职，以求复兴。然而，不久他就堕楼身亡，现场没有遗书，事件也看似没有疑点，警察最后以自杀来认定。但是，关于他的死，仍旧疑点重重，编辑部人员也议论纷纷。“是他杀？还是自杀？”，对此抱有怀疑、如今负责出版相关事宜的调查员水野优希(松下奈绪)，和已成为主编的醍醐真司(古田新太)再次连手调查事件，过程中还牵扯出不明古画稿，更与战后最大悬案「下山事件」有关联,,,,,,
10 years after Martin Shaw turned the beloved Inspector Gently novels into a hit BBC One TV series, filming has begun on two final feature-length episodes. Back in action one last time will be Shaw as the eponymous inspector, who is tested like never before just as he winds down his career. In the first of two films - Gently Liberated - the inspector and his trusted allies Bacchus (Lee Ingleby) and Coles (Lisa McGrillis) are brought in to investigate a possible "miscarriage of justice". However, their final case in Gently and the New Age has the Met's new Special Investigations Squad boss Lister bringing in the inspector to investigate high levels of corruption within the force. Both of these mini-movies will be set in 1970, as the women's liberation movement and the rise of the Conservative Party bring clashing values to Britain.
