Klein is an extremely secretive man, and almost nothing is known about him.
This is enhanced by his reputation for being a secretive man.
They were secretive men who supervised a system that needed little supervision because it actually made nearly everybody happy.
A very solid ghost, this, or a most mysterious and secretive man.
A rather grimly secretive young man, he had risen to prominence only in the last few years.
He was a secretive man, always going off on trips, and rarely taking her.
And the Colonel was the most secretive man I have come across.
You're a very secretive man, and it shows in all sorts of ways.
My father was a very secretive man but also a very methodical one.
Harry is a secretive man, an introvert, awkward with everyone, especially women.