Supernatural's Sam and Dean Winchester may spend a lot of time on their own, but the brothers' friends will come out en masse during season 10.

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From Cas' (Misha Collins) regular presence to the return of Charlie (Felicia Day) to an appearance by Donna Hanscum (Brianna Buckmaster), the hunters will have plenty of company during the first half of season 10.

Executive producers Jeremy Carver and Robert Singer gave fans an early overview of the upcoming season on iTunes, and Hypable reported that the pair teased Charlie's highly anticipated return from Oz.

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The Lord of the Rings fan followed Dorothy to find the more magical side of monster hunting last year, and viewers were left wondering if the computer genius would ever return. While Carver and Singer were mum on details of Day's upcoming part, co-executive producer Jim Michaels also addressed the issue on Saturday.

"I love [Charlie] too," Michaels told a fan. "And I think it would be unwise never to bring Charlie back... stay tuned..."

Meanwhile, there is also a possibility that Jody Mills (Kim Rhodes) will team up with Donna Hanscum (the police officer from "The Purge") in a buddy cop episode, according to Hypable. Considering Donna has very little knowledge of the hunting world, it would be interesting to see Sheriff Mills bring her up to speed.

Find out more when Supernatural returns to The CW on Oct. 7. Click the video below to get a glimpse of Sam (Jared Padalecki), Dean (Jensen Ackles), Cas, and Crowley (Mark Sheppard) in season 10.

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Supernatural, Television, The cw