Winchester Radio--Shadow, Devil's Trap, Born Under Bad Sign

That Was Then, This Is Now:  Discussion of Supernatural's 'Shadow,' 'Devil's Trap,' and 'Born Under a Bad Sign.'
SHADOW
While investigating a mysterious death in Chicago, Sam (Jared Padalecki) and Dean (Jensen Ackles) run into Meg (guest star Nicki Aycox), who is thrilled to see Sam again. The brothers soon discover Meg is behind the murders and attempt to catch her. Unfortunately, Meg is one step ahead of them and unleashes shadow spirits on the brothers to ambush them. Sam and Dean realize the trap isn't for them, but for their father (Jeffrey Dean Morgan).
DEVIL'S TRAP
On a mission to save their father (Jeffrey Dean Morgan) from Meg (guest star Nicki Aycox), Sam (Jared Padalecki) and Dean (Jensen Ackles) seek help from an old family friend, Bobby (guest star Jim Beaver). When Meg shows up on Bobby's doorstep, the brothers lure her into a trap and exorcise the demon from her body after learning where John is being held prisoner. While trying to rescue John, the demon shows up and a full battle ensues between the Winchesters and the demon they have been searching for all their lives.
BORN UNDER A BAD SIGN
After receiving a frantic call from Sam (Jared Padalecki), who has been missing for over a week, Dean (Jensen Ackles) races to his brother's side. He finds Sam covered in blood, but unable to remember anything that happened.
Upon investigation, the brothers are horrified to discover a tape that shows Sam killing another hunter in cold blood, causing Sam to believe his evil side is finally taking over.