From the book " and then there were none" why is vera claythorne important to justice wargrave's plan

Which of the fallowing is true about plays

From “the raven” by edgar allan poe but the raven, sitting lonely on the placid bust, spoke only that one word, as if his soul in that one word he did outpour. nothing farther then he uttered—not a feather then he fluttered— till i scarcely more than muttered, “other friends have flown before— on the morrow he will leave me, as my hopes have flown before.” then the bird said, “nevermore.” in this excerpt, what is the speaker saying the raven will do? a. it will certainly die. b. it will leave immediately. c. it will leave the next day. d. it will befriend the speaker.

What element of medieval literature does the disappearance of the sword into the lake represent?