In Chicago, Sam and Dean encounter five clans of monsters that run the city's underground... and Ennis, a young would-be hunter who seeks revenge on one of the clans.
The fate of humanity is on the line as Walter plans to make the ultimate sacrifice to stop the Observers before they were ever created.
Oliver takes Helena under his wing and trains her in the life of a street vigilante. However, Diggle has concerns about Helena, concerns that soon prove true when Helena kills the head of the Triad and puts herself and Oliver at risk.moreless
Along with the repercussions from the shooting at City Hall, Linden learns that the photo that got the councilman arrested was a fake since the camera that supposedly took the shot had been out of service for more than two months. She returns to Seattle to investigate the possibility of a cover up and is unsure if she can trust Holder.moreless
Information surfaces and lives are at risk as Rebecca continues her dogged pursuit of Tommy Madsen.
After his grandmother's funeral, Mike finds an artifact in her basement could re-write the history of our nation. There are clues that suggest George Washington was in fact a cannibal, Mike must protect his family and escape from a band of Washingtonians, hungry for human flesh and willing to protect Washington's secrets.moreless
Henry's old captain believes he's solved a murder, but his Alzheimer's has caused him to forget the most important details: the crime, and who committed it. Henry calls in Shawn and Gus who find themselves investigating a murder that happened decades ago – or was it just the other day? – and only the faulty memory of the retired officer gives them any hope of closing the case.moreless