The journalist Tom Burgis speaks to Prof. Liz Dávid-Barrett about his work investigating corruption across different continents. Tom talks about he got into journalism and what goes into researching these books. His books cover what Tom calls the rise of kleptocracy since the end of the Cold War. The latest - Cuckooland - grapples with some of the challenges for journalists in scrutinising public figures in a 'post-truth' society.