Supernatural's crew has returned to Vancouver and preparation for season 10 has kicked into high gear.

Castiel's Grace Is Running Out On 'Supernatural', What Will Misha Collins' Angel Do Before He Dies?

Writers for the CW series spent the last five weeks hashing out plots for episodes one through five, and now its time for everyone from the executive producers to the visual effects team to head back into the office.

5:41 a.m. I think we can safely say that today is officially Day One of Prep for Season Ten," tweeted location manager Russ Hamilton on Monday.

Sam & Cas Prepared To Kill Demon Dean On 'Supernatural', Jared Padalecki Talks Containment Options

While actors Jensen Ackles (Dean), Jared Padalecki (Sam), Misha Collins (Castiel), and Crowley (Mark Sheppard) still have several weeks of vacation before them, it appears as if they will have a very interesting premiere script to peruse when they return.

"[Coming back] soon my friend," Hamilton wrote on Tuesday. "From what I've read, WOW is all I can say, I've never been so excited for a Season of any show I've EVER done."

Supernatural concluded season 9 by wrapping up the battle against Metatron (Curtis Armstrong) and Abaddon (Alaina Huffman), but the war will have lasting effects on both Dean Winchester and Castiel. Between Dean's new demon form and Cas' failing grace, Team Free Will will have a lot to contend with in season 10.

Supernatural will return to The CW this fall. Click the video below to catch up on the final moment of the season 9 finale, "Do You Believe In Miracles."

Tags: supernatural television the cw