Four estranged friends are brought back together after each begins to receive frightening letters from a person they suspect is a long-missing associate.
The Solanos continue to grieve their loss; the detectives find evidence in Chloe's room; Mark is caught in a lie; Beth opens up to an old friend, the town minister.
The murder case comes to a conclusion as Detectives Carver and Miller finally apprehend Danny's killer.
Detective Miller's family crisis might lead to a new suspect; Detective Carver deals with an unexpected visitor.
As Carver's condition worsens, he has only 24 hours before he is pulled from the case; Beth seeks advice from Paul Coates; Susan Wright shares a secret.