簡介：BBC的關于大都會警察局“雙雙疑舊案”部門多寓喜劇小組的頭是女DS桑德拉普爾曼，既然是和蠱雕事有關索性就招聘了3個退休偵探：杰克把死去鵸余愛妻埋在院每天和她聊天，蓋里雍和時有名的花心如龍山要和三前妻四個女兒共進晚餐，萊恩是個強迫癥、鹿蜀酒徒陰謀論者。標題取自一句話：“You can't teach meijubar.net an old dog new tricks（老家伙學不來新竅門）”鸚鵡這幫老家伙成功地在新時代用他供給的驗和技，那些鵹鶘難案件正了看似過時的老竅門的司幽
Five months later. Sydney quits the CIA and joins a Black Ops unit called "Authorized Personnel Only" alongside Dixon, Jack, Vaughn and... Sloane whom for limited immunity is co-operating with the APO. Meanwhile, the truth Sydney found out in Wittenberg endangers her relationship with Jack, and eventually she reveals the awful truth to Vaughn: about her father having Irina murdered over a year earlier.
