It may be hidden behind a circular plate around the lever.
How to change door lock without screws.
High end door knobs and lock sets use a unique installation style that hides mounting screws from view.
Open the door so that you can view the edge of the door.
These screws are behind the decorative cover plate between the inner door knob and the door.
Most door knobs attach to the door with long retaining screws that are visible.
Unfortunately with a plethora of doorknobs available on the market you may not even know what kind you have.
Expose hidden set screws.
Remove a kwikset knob lock set with no screws and no detent the secret catch.
Locate the two screws that secure the latch mechanism in place.
When you first look at this style of door knob it appears as if it cannot be removed from.
Remove the two screws with your screwdriver and slide the latch out of the edge of the door.
Measure the diameter of the holes currently cut out of your door so you can select a new door lock that fits those dimensions.
This plate is known as a rose and can almost always be removed by hand.
Take care to measure carefully as matching the size can be especially problematic in older homes.
Remove door knob without screws suddenly you are left with the task of removing your doorknob you rightfully infer it will be easy enough simply take out a few screws and take the knob right off.
Interior door knobs however will often have the screws hidden from view for a cleaner look on the door.
Try twisting or pulling the rose away from the door to expose the screws.
A set screw is typically installed along the base of the lock on the interior side of the door.