A locking device for a door (1), window, or the like, with a main lock casing (2), at least one additional lock casing (3) and at least one pushrod (11) connecting the additional lock casing (3) with the main lock casing (2), wherein the additional lock casing (3) has a retractable latch bolt (10), which can be freely pushed out of the latch position into the additional lock casing (3), which can be pushed into its locking position by means of a spring (28) and/or a gear, and wherein the latch bolt (10) on its side located opposite a leading incline (22) and in the area of the latch end (34) has a protrusion (43), on which a latch restoring lever (40) acts, and the latch restoring lever (40) has a first catch (46), by means of which a pushrod (11) is taken along in the one direction, that the latch restoring lever (40) has a second catch (47), by means of which it is taken along by the pushrod (11) in the other direction.