As written, this adventure follows the 'Pure' track, sheer creeping horror with no easy answers (and nothing you can fight). If that doesn't appeal, do not move on, there are notes on how to run it as a 'Pulp; style adventure instead. The Introduction tells of a brooding clifftop school on a Scottish island, lurking horrors below and the disappearance of the last lot of Investigators to go there. Will your party fare any better?
The starting premise is that your Investigators are part of, or at least familiar with, the "London occult set" and will be familiar with a bunch of their peers who wanted to investigate the strange aftermath of a meteorite which landed in the vicinity of the school and eventually took jobs there as a means to this end... but who have not been heard from for several months. The Keeper is encouraged to talk to the players in some detail about their characters' involvement: who was it that they knew amongst the disappeared fellows, what sort of job do they intend to take up, and how well (if at all) do they know the rest of this party? This information should be kept and referred to frequently to personalse the adventure to each character in the group. There are notes about generating characters for this adventure - it is, it seems, better suited to being a one-shot than part of an on-going campaign, although you may decide differently. This includes a discussion about Drives, and how each will interact with events in the adventure. Other dramatic tips are also discussed.
The adventure proper starts as the party arrives at St Margaret's, but it is suggested that flashbacks and directed scenes are used to backfill just why they are all on the ferry. Then it's on to the school with notes on the main members of staff (complete with suggestions for role-playing them that verge on acting - posture, voice, mannerisms - little things that help them come to life for your players). From then on in, school routine takes over and the party will have to slot into it as appropriate for the post they are filling. Note that posts are pretty dependent on your social standing (as determined by Credit Rating) although with cunning use of Disguise characters may attempt to seem what they are not.
There are, of course, loads of clues to be had. Each one comes with an array of ways to discover it, which brings the whole thing to life and enables you to weave them in seamlessly to conversations and explorations. There are locations to visit, each with their own array of clues, and eventually the party will be led to the source of the problem... and it is left to them how they cope with what they find. Perhaps they give up and die, maybe they escape at least physically (but probably go mad...
Although it is supposed to end there, a few suggestions for follow-up adventures are given. These will probably involve a new set of Investigators, or may even cross over into another Gumshoe game line... Esoterrorists or Fear Itself are suitable here. Five pre-generated Investigators, woven firmly into the plot are provided, along with the original ones who they have followed here (you can make up more if you like, especially if your players would rather create their own characters). There are a couple of handouts, and that's it.
It makes for a compelling adventure, but unless you are good at providing details on the fly some preparatory work is advisable. There is no plan of the school nor map of the island. The ending comes over as rather flat and may leave a lot of people feeling dissatisfied despite it being true to the spirit of a Lovecraft story. Hence you might want to make at least a little bit of use of the Pulp notes or modify the ending in a way of your own choosing. Atmosphere, though, is excellent!
[5 of 5 Stars!]