Agatha Christie - The ABC Murders achievements

Have opened the secret cupboard of Sir Carmichael's secretary.

Have discussed porcelain with Thora Grey.

Have made a mistake …

Have prepared to leave for Churston.

Have made half of the observations.

Have completed half of the interrogations.

Have answered half of the questions from the little grey cells.

Have solved half the riddles.

Have tidied up once.

Have told Japp about the second crime.

Unmask the murderer

It's nice to confide in Uncle Poirot … And that is why you conducted all of the interrogations to perfection!