After testing the waters with a well-received backdoor pilot, the Supernatural spin-off Wayward Sisters seemed like a sure bet to be picked up. However, Supernatural executive producer Andrew Dabb revealed on Friday that the CW has decided to pass on the series.

"It breaks my heart to say this, but CW has chosen to pass on Wayward Sisters. We love these characters, and have spent almost two years trying to make this show a reality on the network... but there are some fights, sometimes, you can't win," he tweeted. "I want to thank everyone involved in this entire process, from our fantastic crew, to our amazing cast, and, most of all you. Your passion for this idea fueled us, and we wanted so much to make this happen for you. I'm so sorry we couldn't."

Dabb also noted that while the spin-off won't be picked up, this isn't the end of the road for Jody Mills (Kim Rhodes) and the rest of the Wayward Sisters. "But know that these characters will live on. We owe them, and you, and us that," he added.

Set in Sioux Falls, South Dakota, the series centered around Mills (Kim Rhodes) as she teams up with Donna Hanscum (Briana Buckmaster) to train a group of scrappy young women who were orphaned by supernatural forces. The powerful team, consisting of familar faces like Claire (Kathryn Love Newton), the daughter of Castiel's (Misha Collins) human vessel Jimmy Novak, and Patience Turner (Clark Backo), the psychic granddaughter of Missouri Moseley (Loretta Devine), were to take on the dark forces lurking about the city.

This is Dabb's second unsuccessful attempt to launch a Supernatural spin-off after the CW also passed on Bloodlines back in 2014.

It breaks my heart to say this, but CW has chosen to pass on Wayward Sisters. We love these characters, and have spent almost two years trying to make this show a reality on the network... but there are some fights, sometimes, you can't win. — Andrew Dabb (@andrewdabb) May 11, 2018

I want to thank everyone involved in this entire process, from our fantastic crew, to our amazing cast, and, most of all you. Your passion for this idea fueled us, and we wanted so much to make this happen for you. I'm so sorry we couldn't. — Andrew Dabb (@andrewdabb) May 11, 2018

But know that these characters will live on. We owe them, and you, and us that.



Thank you. — Andrew Dabb (@andrewdabb) May 11, 2018

(Full disclosure: TV Guide is owned by CBS, one of The CW's parent companies.)