What was it? Pick-on-Big-and-Ugly-Kids Day?

"Extra pay," Annabeth promised. "Three more drachma on arrival."

"Done!" the woman screamed.

Reluctantly I got in the cab. Tyson squeezed in the middle. Annabeth crawled in last.

The interior was also smoky gray, but it felt solid enough. The seat was cracked and lumpy—no different than most taxis. There was no Plexiglas screen separating us from the old lady driving… Wait a minute. There wasn't just one old lady. There were three, all crammed in the front seat, each with stringy hair covering her eyes, bony hands, and a charcoal-colored sackcloth dress.

The one driving said, "Long Island! Out-of-metro fare bonus! Ha!"

She floored the accelerator, and my head slammed against the backrest. A prerecorded voice came on over the speaker: Hi, this is Ganymede, cup-bearer to Zeus, and when I'm out buying wine for the Lord of the Skies, I always buckle up!

I looked down and found a large black chain instead of a seat belt. I decided I wasn't that desperate… yet.

The cab sped around the corner of West Broadway, and the gray lady sitting in the middle screeched, "Look out! Go left!"

"Well, if you'd give me the eye, Tempest, I could see that!" the driver complained.

Wait a minute. Give her the eye?

I didn't have time to ask questions because the driver swerved to avoid an oncoming delivery truck, ran over the curb with a jaw-rattling thump, and flew into the next block.

"Wasp!" the third lady said to the driver. "Give me the girl's coin! I want to bite it."

"You bit it last time, Anger!" said the driver, whose name must've been Wasp. "It's my turn!"

"Is not!" yelled the one called Anger.

The middle one, Tempest, screamed, "Red light!"

"Brake!" yelled Anger.

Instead, Wasp floored the accelerator and rode up on the curb, screeching around another corner, and knocking over a newspaper box. She left my stomach somewhere back on Broome Street.

"Excuse me," I said. "But… can you see?"

"No!" screamed Wasp from behind the wheel.

"No!" screamed Tempest from the middle.

"Of course!" screamed Anger by the shotgun window.

I looked at Annabeth. "They're blind?"

"Not completely," Annabeth said. "They have an eye."

"One eye?"

"Yeah."

"Each?"

"No. One eye total."

Next to me, Tyson groaned and grabbed the seat. "Not feeling so good."

"Oh, man," I said, because I'd seen Tyson get carsick on school field trips and it was not something you wanted to be within fifty feet of. "Hang in there, big guy. Anybody got a garbage bag or something?"

The three gray ladies were too busy squabbling to pay me any attention. I looked over at Annabeth, who was hanging on for dear life, and I gave her a why-did-you-do-this-to-me look.

"Hey," she said, "Gray Sisters Taxi is the fastest way to camp."

"Then why didn't you take it from Virginia?"

"That's outside their service area," she said, like that should be obvious. "They only serve Greater New York and surrounding communities."

"We've had famous people in this cab!" Anger exclaimed. "Jason! You remember him?"

"Don't remind me!" Wasp wailed. "And we didn't have a cab back then, you old bat. That was three thousand years ago!"

"Give me the tooth!" Anger tried to grab at Wasp's mouth, but Wasp swatted her hand away.

"Only if Tempest gives me the eye!"

"No!" Tempest screeched. "You had it yesterday!"

"But I'm driving, you old hag!"

"Excuses! Turn! That was your turn!"

Wasp swerved hard onto Delancey Street, squishing me between Tyson and the door. She punched the gas and we shot up the Williamsburg Bridge at seventy miles an hour.

The three sisters were fighting for real now, slapping each other as Anger tried to grab at Wasp's face and Wasp tried to grab at Tempest's. With their hair flying and their mouths open, screaming at each other, I realized that none of the sisters had any teeth except for Wasp, who had one mossy yellow incisor. Instead of eyes, they just had closed, sunken eyelids, except for Anger, who had one bloodshot green eye that stared at everything hungrily, as if it couldn't get enough of anything it saw.

Finally Anger, who had the advantage of sight, managed to yank the tooth out of her sister Wasp's mouth. This made Wasp so mad she swerved toward the edge of the Williamsburg Bridge, yelling, "'Ivit back! 'Ivit back!"

Tyson groaned and clutched his stomach.

"Uh, if anybody's interested," I said, "we're going to die!"

"Don't worry," Annabeth told me, sounding pretty worried. "The Gray Sisters know what they're doing. They're really very wise."

This coming from the daughter of Athena, but I wasn't exactly reassured. We were skimming along the edge of a bridge a hundred and thirty feet above the East River.

"Yes, wise!" Anger grinned in the rearview mirror, showing off her newly acquired tooth. "We know things!"

"Every street in Manhattan!" Wasp bragged, still hitting her sister. "The capital of Nepal!"

"The location you seek!" Tempest added.

Immediately her sisters pummeled her from either side, screaming, "Be quiet! Be quiet! He didn't even ask yet!"

"What?" I said. "What location? I'm not seeking any—"

"Nothing!" Tempest said. "You're right, boy. It's nothing!"

"Tell me."

"No!" they all screamed.

"The last time we told, it was horrible!" Tempest said.

"Eye tossed in a lake!" Anger agreed.

"Years to find it again!" Wasp moaned. "And speaking of that—give it back!"

"No!" yelled Anger.

"Eye!" Wasp yelled. "Gimme!"

She whacked her sister Anger on the back. There was a sickening pop and something flew out of Anger's face. Anger fumbled for it, trying to catch it, but she only managed to bat it with the back of her hand. The slimy green orb sailed over her shoulder, into the backseat, and straight into my lap.

I jumped so hard, my head hit the ceiling and the eyeball rolled away.

"I can't see!" all three sisters yelled.

"Give me the eye!" Wasp wailed.

"Give her the eye!" Annabeth screamed.

"I don't have it!" I said.

"There, by your foot," Annabeth said. "Don't step on it! Get it!"

"I'm not picking that up!"

The taxi slammed against the guardrail and skidded along with a horrible grinding noise. The whole car shuddered, billowing gray smoke as if it were about to dissolve from the strain.

"Going to be sick!" Tyson warned.

"Annabeth," I yelled, "let Tyson use your backpack!"

"Are you crazy? Get the eye!"

Wasp yanked the wheel, and the taxi swerved away from the rail. We hurtled down the bridge toward Brooklyn, going faster than any human taxi. The Gray Sisters screeched and pummeled each other and cried out for their eye.

At last I steeled my nerves. I ripped off a chunk of my tie-dyed T-shirt, which was already falling apart from all the burn marks, and used it to pick the eyeball off the floor.

"Nice boy!" Anger cried, as if she somehow knew I had her missing peeper. "Give it back!"

"Not until you explain," I told her. "What were you talking about, the location I seek?"

"No time!" Tempest cried. "Accelerating!"

I looked out the window. Sure enough, trees and cars and whole neighborhoods were now zipping by in a gray blur. We were already out of Brooklyn, heading through the middle of Long Island.

"Percy," Annabeth warned, "they can't find our destination without the eye. We'll just keep accelerating until we break into a million pieces."

"First they have to tell me," I said. "Or I'll open the window and throw the eye into oncoming traffic."

"No!" the Gray Sisters wailed. "Too dangerous!"

"I'm rolling down the window."

"Wait!" the Gray Sisters screamed. "30, 31, 75, 12!"