Have finished Andover.

Have finished Cust's interrogation.

Have unmasked murderer!

Have made an observation.

Have made half of the observations.

Have made all the observations.

Have answered a question from the little grey cells.

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

Have answered all the questions from the little grey cells.

Have completed an interrogation.

Have completed half of the interrogations.

Have completed all the interrogations.

Have tidied up once.

Have tidied up twice.

Have tidied up thrice.

Have made a mistake …

Have made four mistakes …

Have made eight mistakes …

Have made yourself at home.

Have taken care of your moustache in all the places with a mirror.

Have solved a riddle.

Have solved half the riddles.

Have solved all the riddles.

Have read any newspaper.

Have read a newspaper which criticises Poirot.

Have read the last newspaper.

The viewpoint of a sick old lady has as much value as that of a pretty and young girl.

Have discussed porcelain with Thora Grey.

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

Have opted for a non-violent end by choosing blank bullets.

Have saved Donbar's life over the telephone.

Have made Mary Drower cry.

Have caused Donbar's heart attack over the telephone.

Have successfully completed Thora Grey's second interrogation

Have searched the entire Churston manor.

Have found all the black dragons in Churston.

Have accused Thora Grey of black magic.

Have discovered Thora Grey's intentions.

Have helped Lady Cust and A.B. Cust.

Have successfully compared all the murderer's letters.