Abstract: Row of seats of a vehicle with an arm rest that is arranged between two outside seats and that can be folded into a position corresponding to the back rests of the adjacent seats for creating the back rest for an emergency seat including a head rest with a retaining part above the back rest, into which support rods of the head rest are inserted, and a contact part extending forwardly and downwardly from retaining part. Back rest of the emergency seat is lockable. Additional locking apparatus for the back rest of the emergency seat is provided without use of additional components. Head rest is height-adjustably guided on a frame laterally extending inwardly into region of arm rest of one of adjacent seats. In retracted position of head rest, contact part of head rest overlaps free end of upwardly folded arm rest.