I read this book about 1-Apr-2015. I've read this book before. The book is copyright 1923. This note was last modified Sunday, 10-May-2015 18:12:48 PDT.
This is book 1 of the "Lord Peter Wimsey" series.
This note contains spoilers for the book.
Mr. Thipps is troubled with a body in his bath.
Lord Peter learns of it through his mother (for whom Thipps, an architect, has done some work).
A lot of investigation eventually reveals that the body there is a homeless man who died in the workhouse, but that the body buried in the grave thought to be the homeless man's is actually Sir Reuben Levy, old rival of Sir Julian Freak for the hand of a lady.
Freak probably didn't get tha name by accident. He also seems to be rather a free-thinker, something of an atheist even—but so is Lord Peter, at least in later books.
It's a clever plot, anyway. Bodies bein hauled around over roofs late at night! A murderer sleeping in his victim's bed!