He had the arrival story locked up and watertight. He was coming to visit, yes, he was bringing someone, and no, don't worry, they'd take a cab from the airport. From a flight that was scheduled to land well after they would actually make the trip, to avoid any peering out the window. (Surprise! Took an earlier flight!)
Standing on the doorstep, he looked up at Loki with a faint smile, finger hovering over the doorbell. "Ready? Last chance to back out if you want."