From the introduction: This scenario is well suited for all players (and characters) of Call of Cthulhu - no matter their experience, whether they are new and have no prior experience, or are old hands who can outstare a Shoggoth. No special skills or knowledge are required for its successful conclusion and no real time frame is set for the scenario, so events move according to the pace of the keeper, though things should ultimately move along regardless. User summary: The scenario is essentially free-form, presenting a situation to which the investigators may respond.