It was the only conclusion that made sense. Dorn Starret had retroed him—the gun proved that—and Luise as well. Until a few minutes ago, he had thought that she had been first and he later, but that was wrong. They had been retrogressed together and Dorn Starret had done it; now he had come back to make certain that they didn't trace him.  
Neat—but it wasn't going to work. Luis grinned to himself. He had a weapon in his pocket that was assurance it wouldn't work.
 
He got off the belt near the building he had seen Luise leaving yesterday. He went into the lobby and located MEMORY LAB, a on the top floor. It wasn't necessary, but he checked dates. The lab had been there exactly three weeks. This tied in with Luise's release from retro-therapy. Every connection he had anticipated was there.
 
He rode up to the top floor. There wasn't a chance that Starret would recognize him; he must have changed too much since the criminal had last seen him. And while Luise hadn't that she was a retro and so had given herself away, he wasn't going to make that mistake.
 
The sign on the door stood out as he came near and disappeared as he went by. MEMORY LAB, that was all—no other name, even here. Naturally. A false name would be occasion for po............