Murder Mansion

You are a team of famous paranormal investigators who have gained renown for exorcising demons and spirits across London. Several days ago, an old woman visited your offices and described an unholy paranormal experience which caused her to blackout. The last thing she recalls seeing before passing out, was the ground opening up and writhing, demonic hands pulling her friend into the earth. Your mission is to find her friend, rescue them from whatever unholy creature has kidnapped them and live to tell the tale.