Scandal at High Chimneys — John Dickson Carr

Matthew Damon was a loving father and figure of stern moral rectitude. Why, then, has a rumor of scandal followed him? Behind the drawn curtains at High Chimneys, Damon's mansion, a sinister presence had disturbed the household. And murder was done.

A FORCE, HIDDEN, BUT MALIGNANT
stirred silently behind the discreetly drawn curtains at High Chimneys. And each member of the household, frantically concealing guilty indiscretions, unwittingly protected another person.

It was not until nightmare murder had been done that the little secrets began to come out, hinting at a scandal so ugly that at least one person would stop at not brutality to keep it hidden!