"Supernatural" season 9, episode 19 airs tomorrow night - find out where to watch "Alex Annie Alexis Ann" online via a free live stream of the CW. In "Supernatural" season 9, episode 19, Sam and Dean will take on vampires!

If you can't make it to a TV by 9pm EST tomorrow night to catch "Supernatural" season 9, episode 19, click here or here to watch "Alex Annie Alexis Ann" 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: "SHERIFF MILLS TRIES TO SAVE A YOUNG GIRL FROM A VAMPIRE NEST - Sheriff Mills (guest star Kim Rhodes) calls Sam (Jared Padalecki) and Dean (Jensen Ackles) after she kills a vampire who attacked a prisoner named Annie (guest star Katherine Ramdeen). They discover Annie was kidnapped by a family of vampires who use her as bait to lure in humans they can then feed on. Sheriff Mills tries to rescue Annie from her captors, but finds out the hard way that family always comes first. Stefan Pleszczynski directed the episode written by Robert Berens (#919)."

Meanwhile, here are the titles and schedule for the rest of the episodes of "Supernatural" season 9, leading up to the season finale:

Episode 20 - "Bloodlines"; April 19.

Episode 21 - "King of the Damned"; May 6.

Episode 22 - "Stairway to Heaven"; May 13.

Episode 20 will be a backdoor pilot for the spin off series of "Supernatural," titled "Bloodlines."

"Supernatural" season 9, episode 19 airs tomorrow night, Tuesday, April 22 at 9:00 PM EST on the CW.