Lady in the Water is a 2006 American
fantasy thriller film written and directed by
M. Night Shyamalan and starring
Paul Giamatti and
Bryce Dallas Howard. The film's plot concerns a Philadelphia maintenance man who discovers a young woman in the swimming pool of his apartment complex. Gradually, he and his neighbors learn that she is a
water nymph whose life is in danger from a vicious, wolf-like, mystical creature that tries to keep her from returning to her watery "blue world".