Cas and Azriel were upon her in momets, holding her down as he tore into her mind, a wild snarling beast. He saw what happened, what Tamlin had done, that Ianthe had listened from the doorway as he raped Feyre, forced marriage on her. He was going to kill him. He was going to KILL him.
He could get Lucien on his side, the boy did not like such things due in large to his own mother, And now that Tamlin wanted to work with his father...
"Go," he tore from her mind, leaving her broken. "Get out of my sight," he snarled. "And let your master know this means war."