Someone's on Dexter's trail and this time it's not Quinn. Is the game finally up? Meanwhile, Quinn finds himself more involved in a homicide than he'd like to be.
A city-wide panic ensues when a sniper goes on the rampage, but Charlie's investigation into the shootings is hampered by an expert brought in by Don.
After getting treated for a burn on her hand, Allison discovers her hand has a mind of its own; Bridgette hides her role in the soccer team from her parents.
Emily assists Nolan's bride manage the secrets from her past, while Victoria is faced with a mysterious new socialite.
A troubled woman who once turned to Mac after witnessing a group of men trying to cover up a murder turns up dead herself, under very suspicious circumstances.