•Why it earns a slot
Why it earns a slot: "The Ransom of Red Chief," the story where the kidnapped boy's father charges the kidnappers to take him back, sits inside this collection as O. Henry's most anthologized proof that a plot can turn completely in one letter.
A killer on the run, a kidnapped boy who refuses to leave, and a five-dollar divorce: twenty-four O. Henry stories bound by one rule, life spins on you the moment you think you have it figured out.
This distillation is written from the freely available original, which is always the better read when you have the time: Project Gutenberg.