Trail of Cthulhu: The Mystery of Brighton Lodge

Melissa took the reins as GM for the first time and used the Trail of Cthulhu rules to run an Agatha Christie style mystery. Stability was replaced with sensibility - act out of character for a proper English person and risk losing sensibility! At any rate, a young woman has been murdered at Brighton Lodge and all of the guests are confined to the resort until the police can finish their investigation.  A group of curious guests band together to find the real killer, because the arrested suspect is clearly not the real murderer. Can you figure out who the culprit is?