Katie receives a tip-off that sultan1966 has been selling gems in the US. After speaking to a buyer in New Orleans, she learns about an even bigger collection of gems offered by the same seller that have ended up in the Washington DC area. Presenter: Katie Razzall Producers: Darin Graham, Ben Henderson and Larissa Kennelly Production Coordinator: Gemma Ashman Mix and sound design : James Beard Composer: Jenny Plant Exec-producer: Joe Kent Investigations Editor: Ed Campbell Series Editor: Matt Willis Commissioning Executive: Tracy Williams Commissioning Editor: Dan Clarke