RE WRITE OF MY MOST POPULAR BOOK The ending is S5, Demi Buckley is Robin's sister, Wills girlfriend, and one of the original party members. Demi and Robin got abused quite badly by her dad, before He got arrested for murdering their mother when Demi was 4. Robin raised Demi after that. She's also max and els best friend Not amazing, there will be spelling mistakes, haters will be ignored X (Demi is the only character I own)