Here are the possible solutions for cain murdered him clue
Answer
Clue
Relevancy
abel
Clue
Cain murdered him
Cain killed him
Cain slew him
Cain was jealous of him
Murdered son of Adam
nero
Clue
His stepbrother Britannicus probably murdered him
neko
Clue
Rocker Case who tweeted "If a dude called me a 'cougar' I'd be more likely to kill him bare-handed and shit him out in front of his parents than fuck him"