Nancy Drew and her friends are invited to Deidre's half Sweet Sixteen birthday party. The girls are so excited to attend this sea-themed party, especially since they know that Deidre will go all out in the planning! But at the party things start to go wrong, and just before Deidre's mermaid dive into the pool, a big snake is discovered! Who is trying to ruin the party and can Nancy and the Clue Crew figure out this mystery? Recommended for ages 6 to 9 years.
