The man reached out his hand and pressed the elevator button. As he saw the sixth floor, his hand dropped back down.
With more than twenty floors in this building, there were numerous residential users. Bumping into a user living on the same floor was not rare, so Isabel Smith didn't pay much attention. She quickly looked down and started searching for her keys inside her bag.
The man wearing a baseball cap stood in a corner of the elevator, pretending to be inadvertent while stealing glances at Isabel with the corner of his eye.
The elevator soon arrived on the sixth floor. The door opened, and the man with the baseball cap stood inside like a gentleman, waiting for Isabel to exit before he followed her out.
There were six houses on each floor, three each on the east and west sides. Isabel lived in the southernmost house on the east side. Coincidentally, the man stood right next to Isabel's house.