A locking and releasing mechanism for a seat having a first fitting part associated with one of a seat part and a backrest and a second fitting part associated with the other one of the seat part and the backrest that may be locked and released relative to one another by the mechanism is disclosed. The mechanism includes a detent pawl configured to selectively latch the first fitting part to lock a displacement of the first and second fitting parts relative to one another and a detent plate configured to be reversibly displaced between a detent position, wherein the detent plate locks the detent pawl so that the detent pawl remains latched with the first fitting part, and a release position, wherein the detent plate allows the detent pawl to be released from the first fitting part.