Bad Machinery is a webcomic written and drawn by John Allison and set in the fictional West Yorkshire town of Tackleford, England. Bad Machinery started on 21 September 2009 loosely based on characters and situations from John Allison's previous webcomic, Scary Go Round. New full colour paneled pages appeared four times a week. The story of Bad Machinery picks up three years after the end of Scary Go Round and involves two groups of schoolchildren that investigate mysteries.