Hijack 999 Cards

The performer took out four cards with blue card back and face of thief. It's a story here. The thieves are going to hijack a bank. And turn the cards around, one card is turned over. What happened? Wow, the thief is hit. Then turn it over again, the card back is changed to red card back. How come? The other thieves escape and call for police. After that, open the three cards, the thieves are all turned to "9". All together is " 999 "

Come complete with special printed cards.