The youthful boy that the monster briefly kidnaps turns out to be William Frankenstein, Victor’s brother. When Frankenstein's creation learns the boy’s true identity, he makes a tumultuous scene by telling William “you shall be my first victim”. Swiftly after threatening William, the monster kills him. This is when Frankenstein's repulsive creation gives up completely on trying to befriend humans. The monster submits to his demons and transforms from a submissive giant into a vindictive and violent creature. He realizes his isolation from the world, this leads to his belief that only a creature as disturbing as himself could associate herself with him. So, the monster murders multiple members of the Frankenstein family in succession to convince Victor to create a female monster. Loneliness and isolation is the the rational of all the homicides Frankenstein’s creation