The Tube is the world's oldest underground railway system, with its own unwritten rules of behaviour and protocol. This Arena begins 150 years ago in a Victorian London of slums and gaslight, and takes the viewer on a thrilling and mysterious adventure through Tube history. Using the voices of passengers and Tube staff, the programme is nothing less than a celebration of a parallel universe, underground.

The film has been produced for Arena by Lone Star productions in association with London's Transport Museum.

Key characters from the film:

• Zoe and Darius Teverson - a mother and child who travel through tube time zones from 1863 to the present day



• Dr Peter Collett - presenter of Channel 4's Bodytalk and one of the original psychologists on Big Brother comments on the unique, sometimes downright weird behaviour to be found on the Tube



• Margaret Barnett - sheltered on the platforms of Hampstead underground station as a child during World War II but hasn't been back for 60 years... until now



• Ted Batchelor - works in the Lost Property Office where he is trying to find the owner of an urn of human ashes left on a tube train in October 1998



• Annie Mole - runs the famous website www.goingunderground.net, a quirky site that became a key source of information on 7 July 2005