Watch The Demonologist (2019) HD Full Movie Free on solarmovie.do. Watch The Demonologist (2019) online free. Detective Damien Seryph investigates a string of murders that connects to a group trying to bring fo...Detective Damien Seryph investigates a string of murders that connects to a group trying to bring forth the 4 King Demons of Hell. Damien's past connects him to those involved and will force him to become "The Demonologist".