The Suicide Hour, by Mildred Davis (epub/Kindle/pdf)
The Suicide Hour. Four A.M., when resistance is lowest. For one particular young woman, the hour has a special meaning...and she often wakes a night, terrified...and unsure exactly why.
The puzzle unravels slowly. What happened to her father? Did he really abandon his wife and children, as everyone thinks? Or did something more sinister occur? Her mother and brother can offer little help or information. Mr. White, her father's business partner, has sold his share of the business and moved away. And why is she so terrified of cellars?