A multi-point lock having an easy to install modular drive mechanism for bolts located at the top and bottom edges of a door in which the multi-point locking system is installed that requires only relatively simple door preparation. The bolt operating mechanism is installed into a rectangular groove cut into a lateral edge of a door which may be cut using relatively simple tools in relatively quick fashion. The bolt actuating mechanisms consist of U-shaped channels each having a driverail slidably mounted therein, with the U-shaped channels fitting entirely within the groove into the lateral edge of the door above and below the mortise pocket.