Cult 1980 BBC television drama, starring Peter Firth as a time-traveller from the year 2130 who returns to 1980 London so he can study the workings of the transport system. Although bound by strict rules of non-engagement with the people of the past, Dominick cannot resist looking up his great-great-grandfather, causing further problems when he falls in love with local woman Jane (Caroline Langrishe). All this brings Dominick into conflict with his manager, the strict Caleb Line (Patrick Magee).