Adrian had already noticed the dark circles around the doctors eyes so he knew he wasn't fine. That and the change in his voice was a good indication.
"Alright. I'll be back in about ten minutes." Adrian went to the front door, put on his coat and left for the sandwich shop. He got himself a couple of sausage, egg and cheese croissants and some orange juice. Paying for the order and getting the food he left and sprinted back to the mansion. Fortunately the sidewalk wasn't crowded with people.
Catching his breath he hung his coat up and walked back to the lab, knocking on the door frame this time. Although the smell of freshly made sandwiches should have given him away, it was still a courtesy knock.