Riley wouldn't speak to Ellie as they ran through the streets of Philadelphia to find the Urban Outfitters where Ben and Abigail were buying clothes. They found them just as they had paid.

"Ben."

"Did you get it? Riley?"

"Oh, we got it. 'The vision to see the treasured past comes as the timely shadow crosses

in front of the house of Pass and Stow.' Now, 'Pass and Stow', of course,

referring to..."

"The Liberty Bell," Ben, Abigail, and Ellie all said in unison.

"Why do you have to do that?"

Well, John Pass and John Stow cast the bell," Abigail said.

"OK. Well, then, what does the rest of this mean?" He looked at the paper and read it again to himself.

"Wait...'The vision to see the treasured past' must refer to a way to read the map," Ben replied.

"Wait, I thought the cipher was the map."

"No, the cipher was a way to find the way to read the map."

Ellie caught on. "And the way to read the map can be found where the 'timely shadow' crosses

in front of the Liberty Bell."

"Crosses in front of the "house" of the Liberty Bell," Ben corrected. "Independence Hall."

"Right, so 'timely shadow' it's a specific time." Ellie was in it now. She remembered this from her childhood. Deciphering things and reading maps to help her father, and at one point, her grandfather, look for clues. She hated that she felt the same old thrill of the chase when she started to pace.

"What time?" Abigail asked.

"What time? What time?" Ben stopped in his tracks. "Wait a minute, wait. You're gonna love this, Ellie."

He turned to the cashier, a teenager who looked incredibly bored.

"Excuse me, can I see one of those hundred-dollar bills I paid you with?"

"No," she answered incredulously.

Ben handed his diver's watch over as collateral. The girl handed him the bill, and he looked at the back of it with a bottle of water as a magnifying glass.

"On the back of a hundred-dollar bill is an etching of Independence Hall based on a painting done in the 1700s, who...the artist was actually a friend of Benjamin Franklin's."

He handed the Declaration to Abigail.

"Hold this."

She took the tube, and he rethought it and held on to it.

"I'm not going anywhere," Abigail reassured him. They smiled at each other, and Ellie and Riley rolled their eyes. Ben went back to the painting.

"Now, I think that if we look at this clock tower...we may find the specific time."

"What do you see?"

"2:22."

"What time is it now?"

"Almost three," The cashier answered.

They all groaned. "We missed it."

Riley smiled to himself triumphantly. "No, we didn't. We didn't miss it because...you don't know this? I-I know something about history that you don't know."

"I'd be very excited to learn about it, Riley," Ben retorted.

"Well, hold on one second, let me just...let me just take in this moment. This is... this is cool. Is this how you feel all the time? Because, you know... Except for now, of course."

"Riley!" Abigail snapped.

"All right! What I know is that daylight savings wasn't established until World War I. If it's 3 pm now, OK, that means in 1776 it would be 2 pm."

Ellie looked at her father and smiled. "Let's go."

Ben nodded and yelled on his way out the door, "Riley, you're a genius!"

"Yeah. Do you actually know who the first person to suggest daylight savings was?"

Everyone else answered in unison, "Benjamin Franklin."

Riley looked at Ellie.

"Did you learn that from him? Did he do that to you as a kid?"

She just smiled again and started after the other two.

At Independence Hall, the four took it as a stroke of luck that the tour was outside when they got there. They were looking at the Liberty Bell and hearing the spiel, so that bought them at least twenty minutes before the group came inside. Ellie paid for them to go in and do a self-guided tour.

They slipped into the stairwell that led to the signing room.

"What bell is this?" Riley asked as they climbed.

"It's the Centennial Bell," Ellie answered. "It replaced the Liberty Bell in 1876."

When they got to the top, it was already 3:22. Ben looked at the spot where the shadow of the steeple was pointing and climbed out the window to investigate. He told Riley and Ellie to go wait in the signing room and pretend they got lost on a tour if they were found, to distract the security guards from his and Abigail's presence in a restricted area. They didn't talk to one another for the first few minutes. Ellie looked around her. She hadn't been to Independence Hall since she was a teenager with her grandpa. Riley stood by her. His hand brushed hers.

"Are you okay?"

"Yeah. Yeah, I'm fine. I just…I forgot what it was like to be immersed in this stuff. I mean, I've been working with it forever. But I think my sensibility about it has been glazed."

"You used to be almost as crazy as him. I remember that."

"I did. Even when he was leaving me behind so that he could go after another lead or another hunch and I could go to school, I couldn't wait until summer vacation to see what we were going to do. I only stopped being so into it after…well…"

"After I left."

"Yes and no. It started when he missed my high school graduation. And then when he walked out of my graduation from Georgetown on a phone call. I mean…I was graduating from his alma mater and he couldn't hold off for an hour. I think that was a big part of my decision to go to Harvard for my masters and doctorate. Spite."

Riley laughed.

"It's the same thing that happened before the wedding. He's single-minded to the point of recklessness. And he took you with him down the rabbit hole. In a way, I suppose I can't fault you for it."

"Ellie?" Riley put his hands on her shoulders. Ben and Abigail rushed in then. Ellie and Riley moved away from one another like oil and water.

"Hey. What'd you score?"

"I found this." He held out an odd pair of glasses with two sets of lenses: one clear and one red and blue. "Some kind of ocular device. 'The vision to see the treasured past'?"

He handed them to Riley and took the Declaration from Abigail. Riley showed the glasses to Ellie.

"Look, they're like early American X-ray specs."

"Benjamin Franklin invented something like these," Abigail said. Ellie had always hated the way she presented history; as though none of the other experts in the room knew what she knew. Ben countered sarcastically.

"I think he invented these."

"So, what do we do with them?"

"Well, Riley, we look through them. Here, help me."

Riley handed the glasses to Ellie and helped Ben unroll the Declaration. Ben passed his side off to Ellie.

"Careful," Abigail said.

"You think?" Ellie retorted. She stopped and took a deep breath.

"What is it? Ellie, are you okay?"

She smiled at Riley, then at her dad. She couldn't help but share her revelation with him.

"It's just that the last time this was here, it was being signed."

Ben smiled back at her, and they had a moment of shared reverence. Riley broke it.

"Ben, there's another tour coming."

"Turn it over."

Riley and Ellie carefully turned the document. Ben put the spectacles on and looked at the blank back.

"What do you see, Dad?"

"What is it? Is it a treasure map?"

"It says, 'Heere at the wall', spelled with two E's. Take a look."

Riley and Ellie both reached for the glasses, but Abigail snatched them from Ben.

"Wow."

Riley started to sulk.

"Why can't they just say, 'Go to this place, and here's the treasure, spend it wisely'?"

Ben wasn't listening to him. He was looking out the window.

"Oh, no."

Ian and his thugs were walking across the street in front of the hall.

"How'd they find us?"

"Well, Riley, lan has nearly unlimited resources. And he's smart.

"I don't think we can get out of here without being spotted."

Ben thought for a moment.

"Well, we don't want them to have the Declaration, or the glasses. But we especially don't want them to have them both together. So we separate the lock from the key."

Ellie's heart skipped.

"We're splitting up."

Ben nodded. "I'll take this."

He took the document tube and the glasses from Abigail.

"And those. You keep that."

"You're not going by yourself?" Ellie said.

"Yes. If they see me, they'll only follow me. Then you three can make it out. I'm not going to let them take you."

"But…I"

"Ellie…"

Ben took her to the side.

"I love you. Okay? I need you to know that. This thing is heating up, finally, and I don't know what's going to happen. But I love you, alright?"

Ellie nodded.

He started back to the other two, then turned around.

"Did you call me Dad before?"

"Yeah. I did."

Ben pulled her into his arms and kissed the top of her head. He squeezed her tightly and whispered to her again.

"I love you."

They separated, and Ben started with his orders again.

"Meet me at the car and call me if you have any problems."

"Like if we get caught and killed?" Riley said in a salty tone.

"Yeah. That would be a big problem. Take care of her."

Each of the three answered, "I will."

Abigail and Ellie answered about the Declaration.

Riley answered about Ellie.