Damien is misinformed I guess, I don't think do Kevin wouldhave killed Damien's fiancee. I know Kevin is also have bad sides but he won't do this ever. How did Damien got to know that Kevin has did this?
when Kyle to Damien someone used his name to blackmail Sarah, I expected Damien to try to investigate secretly who the person could be even if he din't bliv his brother, he was to blinded with anger and revenge
I think rose is the second daughter of Prince and she is Sarahs younger sister... and the lady in the previous chapter who was in the hospital could be their mother...
ITS JUST A GUESS