4 ideas
After quarreling with his wife, Scott Henderson picks up a stranger in a flamboyant orange hat at a Manhattan bar, spends the evening at dinner and a show with her without learning her name, and returns home to find his wife strangled with one of his neckties. The bartender, the cab driver, the restaurant staff, and even a performer who stared at the woman's matching hat all testify that he was alone, so he is convicted and sentenced to death.
Each chapter is titled by how many days remain before the execution, such as 'The Hundred and Fiftieth Day Before the Execution,' down to 'Execution Day' and the hour itself. A fixed, visible deadline changes every scene: minor delays and false leads become costly, and the reader measures each event by how much time it consumes rather than by what it reveals. Suspense comes from showing the clock, not from hiding information.
If every peripheral witness says the same thing, whether through bribery, indifference, or fear, a real person can be made legally nonexistent. The courts treat agreement among disinterested witnesses as proof, so a coordinated or convenient silence becomes stronger evidence than the accused's detailed memory. Truth that rests on a single uncorroborated account is almost defenseless against a consensus.
The friend who leads the search for the missing witness is Jack Lombard, and he turns out to be the murderer. When the person steering an inquiry controls access to the evidence, their help can be indistinguishable from sabotage, and outcomes should be checked by someone who has no stake in them.