Abstract: A lock is provided for a vehicle having a door and a fixed part proximate the door. The lock includes a housing attached to the vehicle door. Latch means, including a hook, are mounted for rotation relative to the housing about an axis. The latch means rotates between a first position, wherein the hook engages a part of the vehicle to secure the door in the closed position, and a second position, wherein the hook is remote from the vehicle part such that the door can be opened. A latch rotation preventing member is moveable, relative to the housing, in a direction substantially parallel to the axis of rotation of the latch, between a forward position, remote from the path of movement of the latch means and a rear position, intersecting the path of the latch means to retain the latch means in its first position. Means are also provided for biasing the member toward the rear position.