Supernatural's Sam and Dean will have to buckle up for a "bumpy ride" in "The Prisoner."

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The CW drama finished filming for episode 20, "Angel Heart," on Tuesday and the series will jump to filming for episode 22, "The Prisoner," later this week.

Penned by Andrew Dabb ("The Things We Left Behind," "Reichenbach"), the script will serve as the penultimate episode for season 10. As per Supernatural style, the final episodes will have viewers on the edge of their seats.

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"DAMN! Cuddos to @andrewdabb for one hell of an episode," production coordinator Jason Fischer teased in early March. "Mark your calendars for May 13th and brace for a bumpy ride. #Supernatural."

Following Supernatural's return on Wednesday, the series will air "Paint It Black," "Inside Man," "Book of the Damned," "The Werther Project," "Angel Heart," and "Dark Dynasty" before "The Prisoner" will lead into "My Brother's Keeper."

If fans thought the post-season 9 hiatus was tough to weather, it sounds like the season 10 finale will be even more devastating.

"Just finished reading the finale," Fischer teased in February. "You thought you were on pins and needles last 'Hellatus' ...You haven't seen anything yet."

Find out what's next for the Winchesters when Supernatural airs Wednesdays at 9 p.m. ET on The CW. Click the video below to see a preview for the series' next episode, "The Things They Carried."

Tags: supernatural the cw television