The Red Widow Murders: A Sir Henry Merrivale Mystery

They say that Lord Mantling's mansion is haunted - at least, one room of it is. Known as the Red Widow's Chamber, the now-sealed quarters once housed the wife of a guillotine operator in the French Revolution, and, since her passing, have been host to a century of unsolved horrors, including the death of a man in 1802, the death of a child in 1895 and a number of mysterious mortalities in the years in between.