
Go to Alaska.
Find Thanatos and free him.
Come back by sundown on June twenty-fourth or die.

The boy regained his composure and held out his hand. ‘Pleased to meet you,’ he said. ‘I’m Nico di Angelo’.
(c) The Son of Neptune
“Percy?” Frank asked. “What’s wrong?”
Percy tried desperately to concentrate. Where had those thoughts come from? Architecture, books… Annabeth had taken him to the library once, back home in— in— The memory faded. Percy slammed his fist into the side of a bookshelf.
“Percy?” Hazel asked gently.
He was so angry, so frustrated with his missing memories that he wanted to punch another bookshelf, but his friends’ concerned faces brought him back to the present.