Ghosts of Darkness (2017)

The paranormal investigators Jack Donavan and Jonathan Blazer receive a mysterious invitation card to go to the notorious Richmond Manor, where several murders have happened along 200 years. A mysterious butler tells that his boss has invited them to stay for three nights at the mansion to get rid of the label of haunted house. In return, they would receive fifty thousand dollars each. Jack is a skeptical man that uses technology to find frauds while Jonathan is a medium. What will they find in the Richmond Manor?—Claudio Carvalho, Rio de Janeiro, Brazil