Lock device for a door, a window or similar having a fixed frame with an active leaf mounted within it - subsequently referred to as an active leaf - and one passive leaf, subsequently referred to as a passive leaf, wherein the lock device comprises: - an active leaf lock for mounting in or on the active leaf, having a lock box with a lock mechanism mounted within it with an extendable and retractable latch and/or an extendable and retractable bolt and a connecting device arranged in the lock box for an actuating handle for extending and/or retracting the latch and/or for extending and/or retracting the bolt and, where applicable, with a lock cylinder that is able to be connected to the latch and/or the bolt for key actuation; and - a passive leaf lock for mounting in or on the passive leaf, having a lock box with a lock mechanism mounted within it with an upper bolt rod connecting device and/or a lower bolt rod connecting device and a connecting device arranged in the lock box for an actuating handle in order to actuate the upper bolt rod connecting device and/or the lower bolt rod connecting device for retracting the lower bolt rod and/or the upper bolt rod and/or for extending the lower bolt rod and/or the upper bolt rod and, where applicable, with a spring mechanism which impinges the lower bolt rod connecting device and/or the upper bolt rod connecting device for the purpose of extending the bolt rod (20u, 20o) or for the purpose of retracting the bolt rod (20u, 20o), wherein the lock box of the passive leaf lock has a latch receiving recess for receiving the extended latch of the active leaf lock and/or has a bolt receiving recess for receiving the extended bolt of the active leaf lock, characterised in that the connecting device of the bolt rod actuating handle is arranged in the lock box of the passive leaf lock in such a way and the bolt rod actuating handle is formed in such a way that the bolt rod actuating handle, in its inoperative state, in which the upper bolt rod and/or the lower bolt rod are or is retracted, is arranged to be countersunk within the bolt receiving recess and/or within the latch receiving recess. - an active leaf lock for mounting in or on the active leaf, having a lock box with a lock mechanism mounted within it with an extendable and retractable latch and/or an extendable and retractable bolt and a connecting device arranged in the lock box for an actuating handle for extending and/or retracting the latch and/or for extending and/or retracting the bolt and, where applicable, with a lock cylinder that is able to be connected to the latch and/or the bolt for key actuation; and - a passive leaf lock for mounting in or on the passive leaf, having a lock box with a lock mechanism mounted within it with an upper bolt rod connecting device and/or a lower bolt rod connecting device and a connecting device arranged in the lock box for an actuating handle in order to actuate the upper bolt rod connecting device and/or the lower bolt rod connecting device for retracting the lower bolt rod and/or the upper bolt rod and/or for extending the lower bolt rod and/or the upper bolt rod and, where applicable, with a spring mechanism which impinges the lower bolt rod connecting device and/or the upper bolt rod connecting device for the purpose of extending the bolt rod (20u, 20o) or for the purpose of retracting the bolt rod (20u, 20o), wherein the lock box of the passive leaf lock has a latch receiving recess for receiving the extended latch of the active leaf lock and/or has a bolt receiving recess for receiving the extended bolt of the active leaf lock,