Rendition

You may be looking for the Torchwood episode of the same name.

Rendition was the taking of individuals from one legal jurisdiction to another. It tended to take two forms, at least on the planet Earth in the 21st century. In many cases, it involved a perfectly legal arrest and extradition. In others, it was entirely wholly illegal.

This latter form of rendition was practised when CIA agent Rex Matheson took Rhys Williams, Gwen Cooper, Anwen Williams, and Captain Jack Harkness from Cardiff, Wales, at gunpoint, to the United States, but emphasised that they were not formally (read: legally) under arrest. (TW: The New World)