His Dark Materials is a play written by British playwright Nicholas Wright, adapted from the Philip Pullman fantasy novel trilogy of the same title.
The play follows the same plot as the books – a story of the coming of age of two children, Will Parry and Lyra Belacqua, and their adventures as they wander through a series of parallel universes against a backdrop of epic events.
During their quest, the pair encounter various fantasy creatures such as witches and armoured polar bears in a journey which they hope will take them to The Republic of Heaven.
There are however some substantial differences, most notably the removal of the character Dr. Mary Malone, whose role in the story is turned over to the witch Serafina Pekala.
[1] The production was directed by Nicholas Hytner and featured the following cast: All other parts were played by members of the company.