He hired master underwater puppeteer Basil Twist to help, using puppets to study the potential movement of the Dementors.

Originally from San Francisco, Basil Twist is a third generation puppeteer.

Basil Twist's "Symphonie Fantastique," a work with puppets based on the Berlioz piece.

Mr. Williams is a dancer and a puppeteer who has often worked with Basil Twist.

Michahelles has also worked in collaboration with master puppeteer Basil Twist.

The floating figures - neither human or even animal-like - move to the puppeteer Basil Twist's interpretation of Berlioz's 19th-century composition.

Abstract forms and shapes move to the puppeteer Basil Twist's interpretation of Berlioz's 19th-century composition.

Opening April 1: a straight-play adaptation of "Carrie," with puppets by Basil Twist.

June 18-23: the puppeteer Basil Twist's version of "Petrushka."

The astonishing wind puppetry and animation of Basil Twist join his gift for abstraction.