What does Judge Wargrave notice about the names "Blore" and "Mr. Davis" in Ten Little Indians? What does Blore reveal about himself to the others?
Blore had assumed an alias in introducing himself to the members of the party on Indian Island. He is known to them as Mr. Davis, from Natal, South Africa. Blore had just finished reading a travel folder about South Africa when he chose his fake identity. He reasoned that none of the people he would be meeting would have had anything to do with South Africa, so, posing as "a man of means" from that country, he would be able to "enter into (their) society unchallenged" (Chapter 1, Part 8).
When the sinister Voice comes over the speakers after the guests had dined on their first night on the island, each of them are called by name and are accused of being involved in a murder of some sort. Judge Wargrave notices that Mr. Davis' name has not been mentioned; instead, a William Henry Blore is recited, and as far as anyone there knows, there is no one by that name among them. Wargrave confronts Blore with the obvious fact that he is using an alias, and Blore "sulkily" admits that it is true.
Blore reveals to the group that he is an ex-CID man who runs a detective agency in Plymouth. He claims that he has been put on the job of "join(ing) the houseparty, posing as a guest...(he is) to watch (them) all". Blore was hired by a man named Owen, ostensibly to watch over Mrs. Owen's jewels, and has been given "a handsome money order for expenses". Now that his cover has been blown, Blore admits that he feels that Owen doesn't even exist (Chapter 3, Part 3).