1. Olympus' Location: The reporters hint that Olympus is located somewhere in New York, which is why they are unable to find it despite intense searching.
2. The Lightning Thief: Percy learns that Zeus' master lightning bolt has been stolen, and he is the prime suspect. The world believes he is responsible for this significant theft.
3. Grover's Mission: Percy accidentally discovers that his satyr friend Grover Underwood has been searching for him as per Chiron's instructions. Grover's role is to ensure his safe passage to Camp Half-Blood.
4. Percy's Parentage: Percy overhears the reporters mentioning that his father is Poseidon, making him a demigod or half-blood son of the sea god. This bit of information confirms Percy's lingering suspicions.