Supernatural's Sam and Dean are the only Winchesters still standing, but the brother's grandfather may make another flashback appearance in the near future.

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First introduced in season 8's "As Time Goes By," Henry Winchester (Gil McKinney) was sucked out of the past thanks to Abaddon (Alaina Huffman) and died in his efforts to kill the Knight of Hell. A Men of Letters member, Henry never made it back to the young John Winchester, but he did introduce his grandsons to their role as legacies.

After Henry managed to snag a brief appearance in season 9's "Mother's Little Helper," fans have been wondering if McKinney's character could return in the future.

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"Nuthin official but I would luv 2 C Henry again," said writer Adam Glass. "Gil plays him so well and I think there is a lot to explore #SPN."

Considering the Winchester brothers have barely tapped the secrets of the Men of Letters, a little more insight from some of John's memories could help give Sam (Jared Padalecki) and Dean (Jensen Ackles) an edge in their fight against heaven and hell.

Find out what's next for Sam and Dean - and possibly Henry - when Supernatural returns to The CW on Oct. 7.

Tags: supernatural television the cw