First Born

First Born is the 11th episode of Season 9.

Cast
Main
 * Jared Padalecki as Sam Winchester
 * Jensen Ackles as Dean Winchester
 * Misha Collins as Castiel

Plot
TIM OMUNDSON (“PSYCH”) GUEST STARS AS CAIN — Looking to reclaim his place as King of Hell, Crowley (Mark Sheppard) asks Dean (Jensen Ackles) for help finding “The First Blade,” the only blade that can kill Abaddon (guest star Alaina Huffman). Knowing he owes Crowley a favor for helping Sam (Jared Padalecki), and also wanting Abaddon dead himself, Dean reluctantly agrees and the two set off on a road trip. However, Dean and Crowley are completely unprepared when they find out who has the blade – Cain (guest star Omundson), the first son. Meanwhile, Sam is back at the bunker with Castiel (Misha Collins) who notices there is some leftover grace inside Sam. If they can extract it, they can use the grace to track Gadreel. The only problem is the procedure may do permanent damage to Sam.

Spoilers
Fans will meet a retired demon named Cain, who was known as the Father of Murder who used to train the Knights of Hell. So what made him quit the game? Love! But Cain may be sticking around for a bit, so we're thinking he could return to his old ways…