Bring them along "unchanged"

"I wish you two would come with me"
The couple look up and make their way over to the taxi. They get in the backseat and wait for you to drive.

You get into the drivers seat and drive out of the parking house. You use the drivers GPS to locate his home. He lives a few miles outside town in a small idyllic cottage.

Looks like no one will come at random and disturb you...