He was the murderer. He wasn't invited there, he owned the whole of Soldier Island. He pretended that he was invited there and then shot in order to trick the other characters into believing he was innocent before he killed them.
Indian Island
Isaac Morris assists Wargrave in creating a false judgment of death for each guest, aiding in their isolation on the island. He is also responsible for supplying the letters to lure the guests to Soldier Island under false pretenses.
Lawrence Wargrave lived on Soldier Island, off the coast of Devon in the United Kingdom.
In "And Then There Were None," Judge Wargrave is accused of being responsible for the deaths of all the other guests on Indian Island. There is evidence suggesting that he orchestrated the murders under the alias "U.N. Owen" to enact his own twisted sense of justice.
At the outset of the novel, Ten Little Indians (US title), Mr. Justice Wargrave is actually dead. The novel is told in the past tense, through letters, diaries and transcripts.
Meeting Wargrave seemed odd to Armstrong because he believes that Wargrave died before the events on the island started. Armstrong's confusion stems from the fact that he thought Wargrave had been executed for his role in a trial where the accused was found guilty and sentenced to death.
Yes, in Agatha Christie's novel "And Then There Were None," Judge Wargrave is referred to as a "tiger" by the character Vera Claythorne. This description serves to highlight Wargrave's cunning and ruthless nature as he orchestrates the demise of the guests on the island.
The population of Wargrave is 3,910.
Armstrong thought that Lombard was Mr Owen, and all his suspicions were directed against him. Wargrave hinted to him a scheme by which it might had been possible to trap the murderer into incriminating himself. (Epilogue).
Lombard suspects Wargrave because he sees him as a mysterious character with a commanding presence, who could potentially be behind the murders on the island due to his background as a judge and his understanding of human psychology. Additionally, Wargrave's calm demeanor and ability to manipulate others raise suspicions about his true intentions.
Isaac Morris is person who bought Indaian Island. He was killed by Justice Wargrave when he gave him poison claiming it would help with his indigestion. He died around the same time that the ten guests arrived at Indian Island. Justice Wargrave killed him because he sold drugs to someone and the drugs caused the person's death. This made him guilty in Wargrave's eyes so he was "served justice", a.k.a death, like the nine others on the island.
Wargrave House was created in 1888.