Supernatural has seen its fair share of memorable characters come and go, and that's not changing as one fan favorite is headed back to the occult series.

Despite being presumably killed by Lucifer (Mark Pellegrino) in the Season 12 finale, Rowena (Ruth Connell) will return to help out Sam (Jared Padalecki) and a lovestruck Dean (Jensen Ackles) this week. This latest episode finds the brothers in a tough spot when two witches steal a powerful book of spells after casting one on the elder Winchester, forcing the unlikely allies to embark on an interesting journey of magic, retribution and a little bit of fun.

"There's nothing cuter than a lovestruck Jensen Ackles," Ruth Connell told TV Guide.

While it's unclear how the red-headed sorceress will come back from the dead — or if the character manifests in a different way — we do know that her aid won't come for free. "Usually with Rowena, there must be something in it for her...They do seem to have something that she needs," Connell teased. Plus, it's another opportunity to mess with the Winchesters since they do have quite a bit in common.

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"There's a shared experience that she has with [with Dean and Sam]...and there's potential there for a deepening of their relationship," she added.

However, a deeper exploration of her relationship with the demon-hunting brothers will be a difficult task given that her mind is currently consumed with revenge after being brutally murdered by Lucifer. "It's in every single fiber of her being," Connell said of the heated rivalry. "I think how she feels about Lucifer is pretty epic. We'll see how that progresses."

The episode will also see her come to terms with the death of Crowley (Mark Sheppard), who killed himself with an angel blade as a way of trapping Lucifer in a parallel universe. Although they weren't exactly a loving family unit, Connell says Rowena and her son shared an "irrevocable bond" and his loss will hit her hard. "You'll see her being pretty affected," she explained. "There's a real turning point in her personal life when she hears about Crowley."

After everything that's happened with Lucifer and Crowley, the all-powerful witch is channeling that rage and grief into a newfound sense of purpose which could lead to her finally starting her own major coven. That is, if other things don't get in her way. "You'll see her with more of a determination," said Connell.

See how it all goes down when Supernatural airs Thursday at 8/7c on The CW.

(Full disclosure: TV Guide is owned by CBS, one of The CW's parent companies.)

Ruth Connell, SupernaturalRuth Connell, Supernatural