Rome had to keep his head down, even though he wanted to peek out the window and see where the cars that had been following them were. “What’s going on?” he whispered to Ella as she approached the toll booth. He could see her behind the wheel without lifting his head far enough to be noticed by anyone in other vehicles.

“They’re two back from us,” she said, rolling down her window and crushing a twenty dollar bill into the person’s hands. “Keep the change,” she said.

The bar raised, and Ella shot out of the parking lot, going right because she could merge into traffic that way, even though...