A former cast member will make a reuniting comeback in "Supernatural" Season 12. Add to that, the official plot description and promo trailer clip of episode 13 "Family Feud" is provided here. While a quick rundown of episode 12 titled as "Stuck in the Middle (with You)" 

Theo Devaney will officially be a part of the next episode of "Supernatural" Season 12. According to TV Guide, Devaney returns to reprise his recurring guest character named Gavin McLeod.

Gavin happens to be Crowley's son.

As for the official plot synopsis of episode 13, Spoilers Guide notes, "Sam Winchester (Jared Padalecki) and Dean Winchester (Jensen Ackles) ask Rowena (guest star Ruth Connell) to find Crowley's (Mark A. Sheppard) son. When Sam and Dean look into a murder at a museum, they learn a ghost from a merchant ship that sunk in 1723 may be at the heart of the mystery.

After realizing "The Star" was the also same ship that Crowley's son Gavin McLeod (guest star Theo Devaney) should have been aboard, they enlist help from Rowena to track down Gavin. Kelly Kline (guest star Courtney Ford), is still pregnant with Lucifer's (David Chisum) child, takes refuge with a demon after an angel attempts to kill her."

For a quick rundown of episode 12 "Stuck in the Middle (with You)", Entertainment Weekly reported that Mary failed to tell Sam, Dean, and Angel Castiel that the British men of Letters were involved with a case.

In line with this, The upcoming "Supernatural" Season 12 episode 13 will mark the beginning of Dean and Mary's relationship issues. Titled "Family Feud," Dean will start to question some of their mother's motives

"Supernatural" Season 12 episode 13 is titled as "Family Feud". The upcoming episode is scheduled to premiere on February 23, 2017, at 8:00 p.m. first and exclusive on The CW.