Season seven of Pretty Little Liars  is already getting to the meat of some of the show's biggest mysteries. Not only that, but we've just witnessed the liars' biggest mistake yet : the accidental (yet brutal) murder of Dr. Elliott Rollins. As we continue to question the identity of "A.D."  and all the familiar faces returning to Rosewood , we can't help but reflect back on the other deaths we've seen over the course of the show. Look back at all the lives lost since Pretty Little Liars began.
Archer Dunhill aka Dr. Elliott Rollins
In what has been referred to as their biggest mistake yet , the girls accidentally kill Dr. Elliott Rollins as they attempt to rescue Alison. Hanna's driving the car when they collide with Rollins, killing him instantly. Of course, instead of coming clean, they agree to bury the body, hide the evidence, and lie.
Charlotte DiLaurentis aka CeCe Drake
A lot happens in the wake of the show's highly-anticipated time jump. Charlotte DiLaurentis is finally released from captivity, but she can't enjoy her freedom for more than a day before she's thrown to her death from the clock tower. The worst part is, we still don't know who her killer is .
Aria becomes the second of the girls to actually kill someone when Shana reveals herself as another member of the "A" team. Aria sneaks up on her and knocks her to her death.
Alison DiLaurentis (Bethany Young)
It isn't until halfway through season four that we find out, beyond all doubt, that Ali is alive . It turns out Bethany Young was the girl who was murdered that night, because she was dressed just like Ali. Melissa Hastings thought Spencer had accidentally killed Ali and buried Bethany alive.
We see Mrs. DiLaurentis getting buried in the fourth season finale. We're not sure if she's dead or alive here, or even who kills her, but we do know that she's gone.
Garrett is killed off during season three's Halloween  episode. What's worse, though, is that Aria gets trapped in a box with his corpse.
Detective Darren Wilden
We finally find out in the fifth season premiere that it's CeCe who killed Wilden. The real twist, though, is that she did it to protect Ali.
Maya St. Germain
The horrifying, heartbreaking season two finale concludes with the death of Maya, leaving Emily (and us) devastated. We later find out her cousin Nate — or rather, the guy posing as her cousin Nate — is the one who does the deed.
Ian Thomas dies twice, in a way. In the first season finale, Alison pushes him from the top of the church bell tower, where he gets tangled in and hung by a rope. His body disappears, however, and later appears in a barn with a massive head wound and an alleged suicide note. Creepy stuff.
Lyndon James aka Nate St. Germain
Halfway through season three, Maya's "cousin" reveals himself to be Lyndon James, who is actually Maya's crazy stalker. Emily stabs him to death in an insane scuffle up in a lighthouse.