Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: She set the folder aside , clasping her hands in front of her , calling for her visitor to come in . Silver hair and an easy grin entered her office , drawing a smile to her face as well . Bill Buchanan closed the door behind him , crossing the floor and plunking down into the chair in front of her desk . " Hi , " she greeted . Bill grinned . " Hey there .

Question: What is known about Bill Buchanan ?
Bill Buchanan has an easy smile .
He has a grin and closes doors behind him.