The mysterious caller as he's (almost) seen in "The Dark Side of the Mook".

The mysterious caller is a person who makes several phone calls to Det. Sam Tyler during the series. His face is never shown (however it is revealed who he is towards the end of the series) and he always disguises his voice with a voice changer.


  • This parallels the Hyde calls DI Sam Tyler receives in Manchester.

Characters of Life on Mars (US)
Det sam tyler THUMB  Major tom thumb  Annie norris thumb  Det ray carling thumb  Det chris skelton thumb   Maya daniels thumb
Det. Sam Tyler / Lt. Gene Hunt / Annie Norris / Det. Ray Carling / Det. Chris Skelton / Maya Daniels