Bad Machinery ( 21 September 2009) is a 9-volume mystery and comedy webcomic written and drawn by John Allison that was included in the  Young Adult Library Services Association's "Great Graphic Novels For Teens" list..
September 21, 2009 (2009-09-21) Mystery, Comedy Bad Machinery is a webcomic written and drawn by John Allison and set in the fictional West Yorkshire town of Tackleford, England. Allison, John (2013-04-02). Bad Machinery Volume 1: The Case of the Team Spirit. Oni Press. ISBN 1620100843. Allison, John (2014-03-25). Bad Machinery Volume 2: The Case of the Good Boy. Oni Press. ISBN 1620101149. Allison, John (2014-12-23). Bad Machinery Volume 3: The Case of the Simple Soul. Oni Press. ISBN 1620101939. Allison, John (2015-11-03). Bad Machinery Volume 4: The Case of the Lonely One. Oni Press. ISBN 1620102129. Allison, John (2016-04-20). Bad Machinery Volume 5: The Case of the Fire Inside. Oni Press. ISBN 1620102978. Allison, John (2016-11-29). Bad Machinery Volume 6: The Case of the Unwelcome Visitor. Oni Press. ISBN 1620103516. Allison, John (2017-05-30). Bad Machinery Volume 7: The Case of the Forked Road. Oni Press. ISBN 1620103907. Allison, John (2019-07-31). Bad Machinery Volume 8: The Case of the Modern Men. Oni Press. ISBN 1620104377. Allison, John (2020-01-08). Bad Machinery Volume 9: The Case of the Missing Piece. Oni Press. ISBN 162010668X. In February 2016, Young Adult Library Services Association listed Volume 4 of Bad Machinery in its annual "Great Graphic Novels For Teens" list. 
