she's the daughter of jose eduardo dos santos. for 38 years, hehis rule, much of thela popuon liv in extreme povey while the country was widely reported to be one of the most corrupt in the world. tom burgis is a reporter w's investigated the dos santos family. (audience applauding) >> a lot of the people around jose eduar dos santos have become immensely rich-- family members, generals, sen politicians, people who run the oil industry they have all used those sitions for massive self-enrichment at the cost of the ordinaryngolan. (man introducing dos santos) >> narrator:n 2017, president dos santos steppedown. the new angolan government has now opened a cminal investigation into isabel dos saying that she anher husband are responsible r mo than $1 billion in lost state funds. she denies any wrongdoing and says she is being politically persecuted. >> so all of this boils down to is isabel what she says she is-- self-made billionae-- or is she the creature of a kleptocratic, corrupt dictatorship? >> narrator: for more than six months, "frontline" an