Abstract: A container closure and locking system, allowing authorized access to the container when indicia on the locking system is correctly aligned. The container closure and locking system, for selectively allowing access to a container having a lip, comprising a container cap having an upper cap and lower cap. The lower cap comprises a main body having a main body bore. Latches mounted within the main body have a tail end, a hook that grips the lip, and a fulcrum between the tail end and hook. The tail end of each latch extends directly below the main body bore. The upper cap is rotatable to an unlocked position. The upper cap has a rotatable disk, having a plunger that can extend downward through the main body bore when the upper cap is in the operable position, to pivot each latch about its fulcrum, freeing its hook from the lip.