In the aftermath of Karen's death, the Liars are being looked at as suspects.

Imogen goes on a mission to find out more about what happened in the past, and it causes a lot of problems.

She and Tabby realize that there's something the moms are not telling them and they learn that Angela's body was found two days after her death because no one phoned the emergency services.

The moms unite to fight for their daughters, but we learn that things are difficult in town and that there's a deadly past their daughters don't know about.

Noa reveals that she didn't take drugs and that she was covering for her mother. Shawn is shocked.

Kelly tells the truth about her and Karen's plan and how the Liars didn't do anything.

This causes shockwaves, but the girls get away with everything ... for now.

They go to Karen's grave and speak about her past.

A is watching them.