Upcoming episodes, programme details and where to watch over the next seven days. All times are UK time.
Canadian border services agents uncover the reason behind a traveller's lengthy trip. Plus, honesty proves to be the best policy for an ex-con. (S3, ep 3)
Text messages create suspicion among border staff about a traveller's intentions. Plus, a European visitor makes a surprising admission about his past. (S3, ep 4)
Air cargo officers discover a suitcase packed with surprises. Plus, a traveller turns on the charm at Vancouver airport. (S3, ep 5)
An American family gets caught taking an arsenal of weapons on holiday. Plus, Alberta officers stumble upon a half-baked scheme. (S3, ep 6)
A group of sailors are stopped for questioning at Port Metro in Vancouver. Meanwhile, the dogs are brought in to help officers in Montréal. (S3, ep 7)
Suspicious packages, dubious passengers and undeclared dogs mean there is never a dull moment for the officers working on Canada's borders. (S3, ep 8)
Officers suspect a travelling chef is cooking up a story. Meanwhile, the arrival of a gun shipment raises big questions in Alberta. (S3, ep 9)
The captain of a luxury yacht sails into problems near Vancouver Island. Plus, the suspicions of Alberta officers are raised by a doggedly determined driver. (S3, ep 10)
Officers uncover questionable hard drives and unusual weapons when they search an RV in Alberta. Elsewhere, X-ray images give agents cause for concern. (S3, ep 11)
A business woman's personal items sound alarms when she tries to cross the border. Plus, what has a crew member on a cargo ship been stashing in the ceiling? (S3, ep 12)