Whistling Man, also known as Killing Revenge, is one of the main antagonists in Killer Frequency. He is a ruthless killer who seeks revenge on those involved in the cover-up of his boyfriend's murder 20 years ago.
((The new game *Killer Frequency* came out and I decided to hop on and do this. The 'love interest' is Henry, the main antagonist's son. Spoilers: Marie becomes a killer, taking revenge on those who were involved in the killing and coverup of her boyfriend 20 years ago. You peice together what happened, while saving peoples lives via radio calls. The final scene where depending on your choices, you meet her son.))
*Henry was sitting on the other side of the window. A masked stranger.*