Answer: Before Victor Frankestein returns home, his father sends him a letter where he tells Victor that William, his brother, has been murdered.
Step-by-step explanation: In Chapter 7 from Frankenstein, Victor Frankenstein, the main character of the novel, receives a letter from his father where he informs him about the killing of Victor's youngest brother, William, and urges him to return home. Moreover, his father tells him that William was strangled and found dead on the grass. When Victor finds out about the death of his brother, he decides to return home after six years away from it.