Places and objects

Indian Island: The mysterious, isolated estate that all the characters are lured to, so that they can be picked off, one by one.

Stickleaven: the small coastal town all the guests stop at the on their way to Indian Island.

Clock: This large marble clock seems at first innocuous, but later it is used to fulfill the eighth section of the rhyme. Its shape is the key.

Wool and curtain: Wool and curtain These are the two stolen items used to create Wargrave's death scene.

Summing up: In British courts , after both lawyers have presented their cases, the judge explains the value of all the evidence, giving the judge the opportunity to sway the minds of the jury.

Heliographing: This is a method of signaling method that uses a mirror to flash in Morse code over a long distance.

Mark of Cain: The mark that god gave Cain to forever identify him as a murderer. It was supposedly a mark in the center of the forehead.