It looks like Castiel will have some heavenly business to attend to in "Paint It Black."

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Sam (Jared Padalecki) and Dean (Jensen Ackles) will be busy investigating some religious-related disembowelments, it looks like Castiel (Misha Collins) will meet up with one of the Winchesters' angelic foes, Metatron (Curtis Armstrong).

Still wingless, Castiel will head to Heaven's temporary entrance, conveniently located in a local sandbox. Collins was seen filming in Ladner's Harbour Park in early February, according to YRV Shoots, and episode 18 may see Metatron and Cas have a little altercation (see video below).

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While the clip nestled in the promo for the second half of season 10 shows Cas take a drastically different approach toward dealing with the manipulative angel - there was a time not too long ago when he ordered the Winchesters not to harm the scribe - the two members of heaven's army will have to get a long enough to take a drive in Cas' pimpmobile.

"I'm starting to think picking up this hitchhiker was a bad idea," Collins captioned a photo of himself and Armstrong in Cas' car (see above).

What could Collins' character need from Dean's killer? Despite Dean's protests, Sam and Cas aren't about to give up their search for a way to cure the Mark of Cain, and Metatron has already confessed o knowing the answer. But will he give it up?

Find out more when Supernatural returns to The CW on March 18 at 9 p.m. ET. Click the video below to see a preview for the series' next episode, "The Things They Carried."