The I-unit exposes the slave masters and people smugglers involved in modern slavery in suburban Britain.

An athlete goes undercover to infiltrate the secret world of sports doping. He reveals the extent of abuse involving some of the biggest names in American sport.

Documents obtained by the I-Unit expose the inner workings of the Myanmar regime and provide evidence of genocide against the Rohingya minority.

Using secret intelligence documents, photographs and witness testimony, the investigation reveals the secret ransoms paid for hostages in Syria and Somalia.