"Hello, ma'am, I am Senior Agent Jimmy Yang from the FBI. Have you noticed the lady across the street? When was the last time you saw her?"
Jimmy looked at the lady who was peeking out from a crack in the door and spoke first, simultaneously flashing his pre-prepared FBI badge for her to see before putting it back in his pocket.
The lady confirmed Jimmy's FBI credentials and then opened the door chain, "Has something happened to her? The last time, it should have been late yesterday afternoon."
Jimmy: "Can you tell me what she was doing at that time? Did you notice anything unusual last night?"
The lady shook her head: "No, when I saw her yesterday, she seemed to have just returned from the supermarket, holding a lot of things."
Jimmy turned his head to look at Mark; Mark shook his head, knocked on the door, and got no response.
Jimmy: "Thank you, ma'am. If you remember anything, please contact me by phone. Here's my card."
