You have a comination lock that you show to a spectator. You explain to him that he can change the combination to any combination he wants. You show him how to change the combination and tell him to change it and to remember the combination. He does not need to write it down, but he has to just remember it and tell no one. After he changes the combination he is to scramble the combination and give the lock back to you. You then take the lock and ask the spectator concentrate on the first number. You then name the first number. It is correct! You do the same thing a second, third & fourth time. Every time you name a number, it is correct! And when you name the last number, the lock pops open! This is great mentalism. There is no writing of the numbers, no impressions to read, no guessing, no pre-show work. This is pure mentalism at it's best! The lock is a genuine gimmicked Master lock.