Pretty Little Liars: 13 Things to Expect From the Game-Changing 7th Season

In our interview with Collins, we asked why the Carissimi Group is so important to Mary Drake. Collins coyly answered, "Mary we don't know much about. The Carissimi Group we don't know much about. But we both know that they're linked, and we both know there is a link to Charlotte there. I think the true meaning and the true nature of Carissimi and what that represents to the story, and to Mary, and to Elliot, is something that we will see in season seven."