Poirot solves it all

1. Mrs.Hubbard (American Women)

1.1. Always talks about her daughter

1.2. Annoying

1.3. Loud

2. Princess Dragomiroff

2.1. Old

2.2. Ugly

2.3. Her Granddaughter is Mrs.Armstrong

2.4. Rich

2.5. Russian

3. M. Bouc

3.1. Poirots friend

3.2. Works on the train

3.3. Security

3.4. Speaks his mind

3.5. Told Poirot that Racthett died

4. Dr. Constantine

4.1. Gives up

4.2. Judges a lot

5. Two Murderers

6. Found a pipe and a woman's handkerchief

7. Access to all rooms

8. Setting Poirot on goose chase

9. Edward Henry Masterman: The Valet

9.1. Knew Ratchett had enemies

9.2. Tells that Racthett took a sleeping drought

9.3. Saw Racthett at about nine o'clock

10. Racthett

10.1. Was killed

10.2. American

10.3. Wealthy

10.4. No one liked him

11. Wagon Lit Conductor

11.1. Saw Ratchett got to bed after dinner

11.2. Worked for the company for 15 years

11.3. Ratchett summoned him after midnight but he said he didn't need him

11.4. Kept the exit door of the train locked so no one could leave

12. Stabbed from a right hand and a left hand

13. Hector MacQueen

13.1. Poirot wanted to talk to MacQueen first

13.2. Didn't like Racthett

13.3. Racthett is MacQueen's boss

14. Women and a Man?

15. Found words saying "-member little Daisy Armstrong."

16. Armstrong Case