This year I did a great effect.

Effect:
I met a stranger on a birthdayparty from a friend.
She should write down any number. I wanted to get this number.
Got it wrong. Instead got her phone number.

Expl.
Two years before she did a prank call on me. Never met her berfor.
Before going to the party, I learned the number.

It was the most amazing reaction I have ever gotten.
Is there any way to recreate this effect, besides knowing it preshow?
Which books/ videos should I buy to do this again?

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