At the moment Gabriel had taken her photograph, the woman had been looking at the menu. Now she was gazing up the length of the street. It was not the preferred view. Most patrons of the restaurant faced the opposite direction, which had a better vista of the city. A waiter appeared. Too late, Gabriel seized the parabolic microphone and trained it on the table. He heard the waiter say “Thank you” in English, followed by a burst of dance music. It was the ringer of her mobile. She dismissed the call with the press of a button, returned the phone to the handbag, and withdrew a Lisbon guidebook. Gabriel again placed his eye to the viewfinder and zoomed in, not on the woman’s face but on the guidebook she held in her hand. It was Frommer’s, English-language. She lowered it after a few seconds and resumed her study of the street.

“What are you looking at?” asked Keller.

“I’m not sure.”

Keller moved closer to the window and followed Gabriel’s gaze. “Pretty,” he said.

“Maybe.”

“Newcomer or habitué?”

“Tourist, apparently.”

“Why would a pretty young tourist eat alone?”

“Good question.”

The waiter reappeared bearing a glass of white wine, which he placed on the table next to the Lisbon guidebook. He opened his order pad, but the woman said something that made him withdraw without writing anything down. He returned a moment later with a check. He placed it on the table and departed. No words were exchanged.

“What just happened?” asked Keller.

“It seems the pretty young tourist had a change of heart.”

“I wonder why.”

“Maybe it had something to do with the phone call she didn’t pick up.”

The woman’s hand was now delving into the open handbag. When it reappeared, it was holding a single banknote. She placed it atop the check, weighted it with the wineglass, and rose.

“I guess she didn’t like it,” said Gabriel.

“Maybe she has a headache.”

The woman was now reaching for the bag. She placed the strap over her shoulder and took one final look up the length of the street. Then she turned in the opposite direction, rounded the corner, and was gone.

“Too bad,” said Keller.

“We’ll see,” said Gabriel.