7 Things We'd Really Like to Know Before the End of Pretty Little Liars

By now we know there is, in fact, someone sinister at the very bottom of this whole mystery: a figure who identifies as "A.D." But to what extent is this person involved?

Does A.D. trace back to the beginning? Is there a reason we haven't heard of them until now? What does this mean for the now defunct "A" team? Do the initials line up with the myriad characters with a D last name, like, uh, DiLaurentis? And furthermore, how does "A.D." tie in with the Carissimi Group, Mary Drake, and Dr. Rollins?

We know Jessica's twin, Mary Drake, is alive and well, but Mrs. DiLaurentis is still very much dead. Why did she die, and who did the deed? Was it Mary Drake, Dr. Rollins, "A.D.," or someone else entirely?

We first meet Sara Harvey in the dollhouse with the girls, but we later learn that there's a lot more to her. After revealing herself as "A" and Charles DiLaurentis, CeCe Drake (aka Charlotte) explains that Sara Harvey had previously dressed up as the Black Widow and Red Coat.

The real question is . . . why? What does Sara have to do with Charlotte in the first place? How did Charlotte convince Sara to help her in such huge and sinister ways? We have the feeling there's a lot we're not being told.

We know something seriously awful happens to Charlotte as soon as she's released from police custody: she gets thrown from the bell tower. What we don't know, though, is who's done it. And believe us, we have plenty of suspects.

We can't help but wonder: are Charlotte's killer and Jessica DiLaurentis's killer the same person, or two different people? And perhaps an even bigger question is why does Charlotte have to die in the first place?

Call us crazy all you want, but there's no way Wren Kingston is totally innocent. We really thought he could be "A" before Charlotte claimed the title. There was something so suspicious about his behavior as a doctor in Radley Sanitarium. Not to mention his frequent shady phone calls, his enigmatic conversations with Mona, and even the British accent of Dr. Rollins.

By the time the season six finale rolls around, we know our time with the Carissimi Group has just begun. In fact, Dr. Rollins reveals his marriage to Alison is all a sham to gain control of the company. But why? What does the Carissimi Group have to do with the liars? What does it have to do with A.D.?

Eddie Lamb remains one of the more intriguing figures in Radley Sanitarium and the Pretty Little Liars universe at large. Perhaps the most troubling fact about Eddie is that he recognizes Aria when she goes undercover at the hospital. He claims to remember Toby from the bygone days when he'd visit his mother. He works closely with Mona and Spencer when they stay in the sanitarium as patients. What does Eddie know? Does he play a larger part in this whole mystery? And where is he now?