Known to his fellow Vinyl Underground members as Perv.  Callum help catch kiddie porn watchers with his fake site.  He would of been a hero if he did not pocket the money and commit a crime because of it.
 
Callum gets apparitions that help solve cases.  It is believe the dead talk to Callum and use him as a medium to channel their message.
 
Callum also chats with Leah King on her Juicy Lou adult website when they want to talk without Morrison's knowledge.