How did Percy annabeth and grover lie to charon about their deaths?

Percy, Annabeth, and Grover lied to Charon by claiming they were dead and had come to the Underworld to pay for their passage across the River Styx. They manipulated the truth by saying they were from the "Department of Death" and needed to cross to complete their mission. This deception allowed them to gain entry into the Underworld without revealing their true identities or intentions.