Scotty took a quick look without seeming to. "Someone there all right. A pal of our little cat?"
"It's certainly no chum of ours, if it's anyone who's interested in us. Let's hike and see how it goes."
They strolled idly past the museum, crossed the street, and walked up Kasr El Nil past the Modern Art Museum and the Automobile Club. Scotty took a pair of sunglasses from his pocket. They were of the silvered one-way mirror type that cuts down light transmission much as a neutral-density filter does for a camera.
Rick watched as he put them on, took them off again, and polished them with a handkerchief, turning them from side to side as he watched for spots.
"I knew those things looked like headlights," Rick gibed. "I didn't know they could also serve as rearview mirrors."
"I may write an article on this for the Journal of the Optical Society," Scotty said. "Works fine. Our buddy is a Sudanese, from the looks of him. Also, he has a comrade. A big, sloppy type in a black coat and a tarboosh. I'd hate to tangle with either of them."
Rick thought of Scotty's comment that it wouldn't take much of a detective to realize he had the cat on him.
Scotty added, "Some distance behind are two other types, in tarbooshes. They're striding along at the same pace we are, and keeping their distance. I'm flattered. Looks as if 'they' figured it would take four to handle us."
"Maybe they sent one for us and three for the cat," Rick said hopefully. "Cats are good scrappers. Any bright ideas, ol' chum?"
"Yep. Let's go to the museum. They can't touch us in a public place. Got the map?"