Hello everyone,
I forget name of one mentalism trick. Trick go like this:

You give an small object to someone and tell him to place it in one of two hands. Than you tell them to choose are they going to tell lie or true whole time. When they decide they put object in one of the hands. Then mentalist ask is object in left hand and you have to answer weather you are lying or telling a true.

At the end mentalist guess where is object.

I think that trick is in book Corinda - 13 Steps to Mentalism.

Thank you!

There is different versions, Tequila hustler for example, but by searching "which hand" effect you will find a lot more.

Banachek has a version he calls Ring of Truth. Patrick Redford has one called Prevaricator. There's one in Pentalogy that I really enjoyed reading. But I don't actually perform any of them, so can't comment beyond that they exist.

Most versions out there are variations of a classic logic puzzle. Redford's uses a slightly different method.

Good luck!

-Patrick

It's called lie or die.