Follow Canadian border services agents on the frontlines of national security. A traveller who's spent a long time abroad gets busted. (S3, ep 1)

Cameras follow the men and women of the US border protection agencies as they uphold the country's much debated immigration polices. (S2, ep 1)

Cameras follow the men and women of the US border protection agencies as they uphold the country's much debated immigration polices. (S2, ep 2)

Documentary series following Australian Customs and Border Protection officers as they attempt to enforce the country's customs, quarantine and immigration laws. (S14, ep 13)

Documentary series following Australian Customs and Border Protection officers as they attempt to enforce the country's customs, quarantine and immigration laws. (S14, ep 14)

Reality series following Ireland's border agents working in passport control, immigration, security, policing and various counterfeit departments. (S2, ep 2)

The Martial Arts Murder: When his parents are found dead, a man does everything he can to avoid being caught - but Luminol reveals a vital clue. (2 of 8)

The Murder of Ronnie Cook: Ex-detective Colin Sutton revisits the murder of Ronnie Cook, killed by his lover who was later dubbed 'the Black Widow'. (S3, ep 8)