A fast-paced HBO Asia Original detective drama series set against the exotic and tumultuous backdrop of 1960s Singapore. Series premiere. When the Cheng Detective Agency is hired by the CIA to investigate the murder of a US sailor, Sam is asked to help out as a favour to the widowed owner, Patricia. But as Sam tries to save the life of an innocent man, he is forced to revisit memories of killing a childhood friend during the second World war.