I Killed the Count
by Alec Coppel

Count Victor Mattoni has been found shot in his flat and Inspector Davidson and his new assistant, the sarcastic and young Detective Raines, are called in to track down the murderer.

Clues implicate first an American named Bernard K. Froy who, when confronted with the evidence, admits the crime.

Next, Lord Sorrington is questioned, and it is found that his daughter, Helen, had been married to the Count who was a no-good, and Lord Sorrington confesses to the crime.

Then there is Mullet, a porter in the building who seems to have some connection with the crime, and he also admits to the deed.

Raines and Davidson are nonplussed, but not nearly so much as they are when the real murderer finally confesses.

But since an English law provides that if more than one person admits the crime, none may be prosecuted, the real offender is freed and justly so.