The episode broadcast on 6 December 2010 featured a disaster storyline, in which an out-of-service tram crashed off the viaduct at the end of Coronation Street after a gas blast at "The Joinery" broke the line. The track was damaged, causing a derailment which sent the front end of the tram into Dev and Sunita's corner shop and the other end into "The Kabin". It is not the first time in Weatherfield's history that such a disaster has happened; there was a derailment of a goods train in 1967.