Britt Robertson is an American actress. She is known for her roles of young orphan witch named Cassie Blake in The CW's The Secret Circle. She plays Marnie Cooper in Scream 4 , she plays Felicity Connor, the best friend of Lauren Prescott (Danielle Panabaker) in Halloween: 8 Years Later, she plays Helen Shivers in remake of I Know What You Did Last Summer and she plays Sophie Willis, Ben Willis's niece in I Wanted To Know What You Did Last Summer and portrayed Sue Snell in Carrie.