Supernatural's Cole is looking for revenge, and offing Dean Winchester is the only way to get it.

Demon Dean Cured By Episode 4 On 'Supernatural'? Jensen Ackles Hints At Early Return To Humanity

The mysterious addition to the Supernatural season 10 cast is less of a riddle now that his motives for tracking Dean (Jensen Ackles) are out in the open. Cole (Travis Aaron Wade) blames Dean for the death of his father, and the old acquaintance of the Winchesters believes killing Dean will make him feel a whole lot better.

Unfortunately for Cole, Demon Dean will still be AWOL as the vengeance seeker continues his search in "Reichenbach." In a quest for answers, Cole will spend the second episode of season 10 torturing Sam (Jared Padalecki) for Dean's location.

Travis Aaron Wade Returns To 'Supernatural' Set, When Will Cole Reappear?

Meanwhile, Demon Dean's agitation levels will be off the charts - a symptom Crowley (Mark Sheppard) will attribute to the Mark of Cain's desire to kill. As the King of Hell urges Dean to kill again, Castiel (Misha Collins) will be confronted with his season 9 nemeses once more.

Find out more when Supernatural returns to The CW on Oct. 7 at 9 p.m. ET with "Black." Click the video below to see a preview for season 10.

Tags: supernatural television the cw