'Supernatural' season 10 spoilers: Charlie and Cain to return in future episodes

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Finally, the show will be back after a long winter hiatus, and it's returning with another set of intriguing episodes. "Supernatural" season 10 is just as awesome as its previous seasons and, needless to say, fans can expect more fun and suspense in the coming weeks. 

In episode 11 titled "The Aftermath," Sam, Dean and Castiel do everything they can to find a cure for the Mark of Cain. The official synopsis reads:

"After the massacre at the ranch, Dean, Sam and Castiel double their efforts to find a cure for the Mark of Cain, but there is nothing in the lore that can help them. Desperate, Castiel comes up with an idea that Sam deems the 'single worst idea I've ever heard.' Meanwhile, Rowena continues to plot against Crowley and Castiel tries to mend his relationship with Claire who is plotting revenge against Dean for killing her friend. John Badham directed this episode written by Eugenie Ross-Leming & Brad Buckner." 

The Mark of Cain is a huge problem for the brothers, which is why someone important will be returning to lend a hand. Spoiler TV reported that episode 14 titled "The Executioner's Song" will mark the return of Cain.

In the episode, Cain will be offering his help to Dean, who is still suffering from the effects of the Mark of Cain. Despite having been cured, the dark effects still linger. Sam, Claire and Castiel want Dean to be free of the mark completely as they've seen first-hand what it does to Dean. 

In episode 15 titled "The Things They Carried," Charlie Bradbury makes her way back to the show. It was revealed to TV Line that she will return "under precarious circumstances." Robert Singer, executive producer, teased that she will not be returning from OZ empty-handed. 

"She teams up with the boys to track that dangerous thing down and hunt with them, basically," Singer said.

The executive producer added that it will not be the same Charlie that will return in this episode.

"Supernatural" season 10 will return with the 10th episode dubbed as "The Hunter Games" on Jan. 20 on The CW.