Soon they were known in the criminal underworld. And to the FBI and the police departments of various states. So when the Vespers came calling, Casper and Cheyenne were only too glad to ditch their parents (now serving twenty-five years to life) and join up with V-1. Now they weren’t just criminals – they were master criminals, linked into a global network.

And she wasn’t going to give that up for anybody.

“He thinks the Cahills can find what he’s looking for,” she said, tilting the mirror again to check out her image. “But what if we find it first?”

The driver checked out Dan and Amy in the rearview mirror. It was the second time he’d done it in less than a minute.

Dan’s fingers drummed nervously on the leather upholstery. He took out his cell phone and wrote a text to Amy.

DRIVER CHECKING US OUT. WHY?

Amy responded in seconds.

NOTICED IT TOO. WE SHOULD BAIL.

Casually, Dan pretended to adjust his backpack. Meanwhile, he looked over his shoulder. A sedan slipped in and out of traffic behind them. It speeded up to avoid a tram.

A tail? Or just an aggressive driver?

They were driving along the Reuss River now. Lucerne looked like a mashup of Zurich and Geneva and Zermatt to Dan – picturesque and impossibly clean, the streets full of law-abiding citizens. Wide, curving streets, buildings painted in pale colors. Everything looked fresh and pretty. It made him nervous. What he needed was a narrow, dirty alley to hide in.

Amy began to cough. She bent over.

“Amy? Are you okay?”

“I think I’m going to be sick,” she said.

“Driver!” Dan called. “Pull over!”

The driver pulled over. Amy tumbled out, followed by Dan. She bent over, but her eyes swept the roadway.