ChannelNewsAsia'saward-winninginvestigativeseriesreturnsforafourthseasonaswegoundercovertoexposethesecretunderbellyofAsia.Throughin-depth,hard-hittingdocumentaries,weexplorestoriesofcrime,violenceandinjustice.Thisseason,wetrackdownmistressbustersinChina,exposeagangofvigilantesouttobustthedrugtradeinMyanmarandinvestigateanepidemicofelderlydeathsinJapan.Findouttheuntoldstorieslurkingwithinthehiddenfabricofourownsocieties....