Robert Graham is known for his work on The Machine (2013), Panic Button (2011) and Poltergeist Activity (2015).
The Revenge of Robert the Doll (The Legend of Robert the Doll)
Poltergeist Activity
Robert and The Toymaker
The Amityville Asylum
The Jonestown Haunting
Valley of the Witch
Theatre of Fear
The Haunting of Margam Castle