A righteous public security officer embarks on a 40-year game of cat and mouse with a suspected Kuomintang sleeper agent in I Know Who You Are, a sporadically entertaining historical drama by Feng Xiaogang.

Lei Jiayin stars as Xiao Dali, a stubborn Chinese official convinced his next-door neighbour is a spy, while Hu Ge plays Feng Jingbo, who sees his secret mission repeatedly eclipsed by growing commitments to a community in rapid transition.

Adapted from Zhang Ce’s novella No Regrets Tracking, the drama unfolds against a backdrop of seismic national upheaval, starting with the founding of the People’s Republic of China in 1949 and encompassing the Great Leap Forward, the Cultural Revolution and sweeping economic reform.

Throughout all this, Dali and Jingbo live side by side, their lives becoming increasingly and irreversibly intertwined.

Read my full South China Morning Post review here