SUBSCRIBE PLEASE br br Serial Killers - Doco UK Chasing The Cumbrian Killer Documentary Film Full Lengthbr Chasing the Cumbrian Killer: Documentary covering the days leading up to events in and around the Cumbrian fishing port of Whitehaven on June 2 2010, when 52-year-old taxi driver Derrick Bird went on a killing spree that resulted in 12 dead, 11 injured and his own suicide. Interviews with eyewitnesses, survivors and police offer an insight into the situation, and the shooter’s movements are traced from the time he woke up to the moment he turned his gun on himself.br br br A serial killer is a person who murders three or more people usually due to abnormal psychological gratification, with the murders taking place over more than a month and including a significant break (a "cooling off period") between them.