"Supernatural" season 9, episode 22 airs tomorrow night - find out where to watch "Stairway to Heaven" online via a free live stream of the CW. Tessa the Reaper returns to "Supernatural," after a massive attack on the angels. There's only one week before the season 9 finale!

If you can't make it to a TV by 9pm EST tomorrow night to catch "Supernatural" season 9, episode 22, click here or here to watch "Stairway to Heaven" online via a free live stream of the CW.

If that doesn't work, the CW also offers episodes on their website to watch online after an episode airs.

The official synopsis for this week's episode reads: "TESSA THE REAPER RETURNS - After a massive attack on the angels, Castiel (Misha Collins) calls Sam (Jared Padalecki) and Dean (Jensen Ackles) for help. As they leave, Dean's eagerness to bring the First Blade doesn't go unnoticed by Sam who is worried about the cost to his brother whenever he uses the Blade. Meanwhile, Castiel is shocked when he learns the angel that caused the attack was one of his followers and did it in his name. Dean discovers there is a conspiracy amongst Castiel's angel followers and at the heart of it is Tessa, the Reaper. Guy Bee directed the episode written by Andrew Dabb (#922)."

There's only one week left before the "Supernatural" season 9 finale titled "Do You Believe in Miracles"! The season finale airs on May 20.

"Supernatural" season 9, episode 222 airs tomorrow night, Tuesday, May 13 at 9:00 PM EST on the CW.