Take a deck of cards and shuffle.
Then show all four aces like this.
Really four more random card are tucked behind the aces.
Square up the packet.
Set it on top.
Pick up the cards one at a time but DON'T show the spectators they think it's the ace.
Stick the first card (called the robber ) close to the bottom and then put the rest like shown.
Square it up.
Take the top four cards of and the will be the aces. Say that the robbers escaped before the cops got there.
Thanks! A can't believe I almost have a 1000 views.