Murder on the Orient Express is a book about the case of the murder of Mr. ratchett.

Poirot brings all of the passengers into the dining car with two possible solutions.A stranger entered the train when it stopped at Vinkovci, killed Ratchett, and then disembarked from it.

Who stabbed ratchett?Hubbard's compartment is next to the other one.Hubbard and 9 other passengers, plus a Wagons-Lit conductor named Pierre, all take turns stabbing Ratchett in the chest before discreetly leaving the compartment, chaining the lock to the door on the way out.

Poirot presents two possible solutions to the crime.Poirot suggests that an assassin snuck onto the train and stabbed Ratchett.

He killed a three-year-old heiress and allowed her family to believe she was still alive to extort money.His death on the Orient Express was revenge for the murder.