Just adding a reminder of a term used early in TB's investigation - 'thrill kill'.
http://www.torontosun.com/2013/05/16/tim-bosmas-murder-may-have-been-thrill-kill-source
An officer also uses the term 'twisted' in the attached article.
http://www.torontosun.com/2013/05/16/tim-bosmas-murder-may-have-been-thrill-kill-source
An officer also uses the term 'twisted' in the attached article.