A deadbolt includes a bolt assembly structured to mount inside a cavity between interior and exterior sides of a door. The bolt assembly includes a bolt housed inside a deadbolt latch. An exterior assembly is structured to mount onto the exterior side of the door. The exterior assembly is operably connected to the deadbolt latch to move the bolt between a retracted position and an extended position. An interior assembly is structured to mount onto the interior side of the door. The interior assembly is operably connected to the deadbolt latch and includes a manual actuator being operable to slide in opposite first and second linear directions causing the deadbolt latch to move the bolt between the retracted and extended positions.