Celebrity couple Sarah Jessica Parker and Matthew Broderick are to host a charity treasure hunt through the American Museum of Natural History in New York.
Composer Stephen Sondheim will create the challenge as part of a gala to raise funds for the Friends In Deed charity on 3 October (11).
The A Little Jurassic Treasure Hunt event will mark the 20th anniversary of Friends In Deed, which aids those suffering from life-threatening illnesses.
After a cocktail reception and the treasure hunt, thespians Barbara Cook and Raul Esparza will perform Sondheim's songs during a dinner reception.
The composer is a wily treasure hunt fan and has devised private treasure hunt parties for friends for decades.