The Young Professionals' Company at Santa Monica Playhouse presents a reprise of the tenth anniversary production of the internationally acclaimed musical The Silver Key: A Search for the Way Out (December 15-February 29), a very contemporary fairy tale quest for the Lost Souls, the Water of Life and the answer to the Unanswerable Riddle. It is a modern musical myth in which Witches and Fairy Godmothers populate a magical world filled with feisty heroines, zany goblins and a host of colorful and fantastical creatures ferociously blurring the boundaries between here and there, yesterday and tomorrow, and fantasy and reality.