Wikipedia: "The Caledonian Sleeper is a sleeper train service operated by First ScotRail and one of only two remaining sleeper services running on the railways of Great Britain, the other being the Night Riviera.

It connects London Euston station and five Scottish termini – Aberdeen, Edinburgh, Fort William, Glasgow and Inverness – six times a week (departures are daily except for Saturday nights) and also serves a number of intermediate stations. The service to Fort William is colloquially known as The Deerstalker.

Caledonian is an adjective relating to Scotland or the Scottish Highlands and derives from Caledonia, the Latin name for northern Britain."