In attempt to recall a plan to defeat the Observers, Walter takes an LSD trip down memory lane. Meanwhile, Peter and Olivia trace a mysterious signal to the woods, where…

After Gus accidentally tampers with the crime where his boss was killed, Shawn helps him find the real murderer before Gus is arrested.

The angels send Anna back in time to kill John and Mary Winchester before they can conceive Sam knowing that if Sam was never born then Lucifer won’t be able…