This book gives you a simple set of rules, and random tables to help play and d100 Modern setting, Cthulhu Mythos RPG solo.
These rules focus on constructing missions and operations in such a way that you will not know the ending until you play it out. Random tables let you set the antagonist, the victims, as well as means, motive, and the first events. You only roll for each part as your character discovers them, and at every turn, you check to see if there is an unnatural influence. It is only a matter of time before the horrors of the Cthulhu mythos start to show through.