Apparently there were brains behind the warrior's abrupt manner.
But behind his vaguely baffled manner was hidden a brilliant, trenchant mind.
I wondered what lay behind his manner.
The girl was simply showing the firmness that really lay behind her friendly manner.
You must be an understanding, kindly sort of person, Miguel, behind your rather forbidding manner.
However, behind his unassuming manner lurked a "cold, vicious bigot".
She spoke ungraciously, but there w a faint suggestion of appeasement behind her manner.
She'd just correctly read one of the other reasons behind my abrupt manner.
"My mission here is to protect these places," he said, showing the steel behind his gracious manner.
He could sense the other man's interest hidden behind his insulting manner.