TV Guide Sky Witness Friday

London's Metropolitan Police dog unit tests the skills of its leading specialist search dogs, pitting spaniels Diesel and Billy against each other as they hunt for hidden heroin. On the streets of north London, shift leader Pete Madden puts his Alsatian Brodie in the line of fire when they target two armed robbers, but as the trail runs cold they find themselves in pursuit of a gang of car vandals. Ken Stott narrates

Documentary following the work of Ireland's border force officers as they fight to stop gangs of organised smugglers from bringing drugs, money, guns, cars and even exotic animals into the country

Documentary following the work of Ireland's border force officers as they fight to stop gangs of organised smugglers from bringing drugs, money, guns, cars and even exotic animals into the country

Fly-on-the-wall documentary accessing the world of national security at Australia's biggest airports as customs and immigration officers tackle drug runners, illegal immigrants and terrorists

Fly-on-the-wall documentary accessing the world of national security at Australia's biggest airports as customs and immigration officers tackle drug runners, illegal immigrants and terrorists

Fly-on-the-wall documentary accessing the world of national security at Australia's biggest airports as customs and immigration officers tackle drug runners, illegal immigrants and terrorists

Fly-on-the-wall documentary accessing the world of national security at Australia's biggest airports as customs and immigration officers tackle drug runners, illegal immigrants and terrorists

Goren and Eames investigate the macabre case of a shooting victim who has been discovered in a vegetative state with her donor kidney removed. In a further bizarre twist, they soon begin to suspect the original owner may have decided to reclaim it because he no longer considers her a worthy recipient. Detective drama, starring Vincent D'Onofrio, Kathryn Erbe and Jamey Sheridan