Along with talks that the Sam Winchester and Dean Winchester will seek Bobby and Rufus' help in "Supernatural" season 11 episode 6, series executive producer Jeremy Carver has also revealed that the series is set to feature several flashbacks.

In his interview with TV Line, Carver said that there would be several flashbacks to let fans link Bobby and Rufus' dynamics to the current story arc of "Supernatural" season 11. He said that episode 16, which is entitled "Safe House," would be a really neat episode. The duo were previously seen in season 10 and season 6, respectively, and they would be encountered again by the Winchester brothers.

In a promo video for "Supernatural" season 11 episode 16, fans were shown that the story characters are set to encounter some incidents, such as one being pulled into a mirror, in addition to some ghosts. According to Vine Report, the episode is also set to stress more about The Darkness, including some details about Castiel and Crowley.

According to Spoilers Guide, episode 16 is set to see a supernatural and threatening creature that escaped by accident attack a mother and a child, leading both into a comatose state. The publication added that as Sam and Dean scrutinize the case, they are set to discover that Bobby and Rufus had already encountered the same creature previously. Thus, the brothers are going to learn how the latter duo handled the beast and do it again, their way.

The CW had also announced that "Supernatural" is set to be renewed for another season, among several of its shows. According to Deadline, the network head, Mark Pedowitz, revealed that the series is set to go on as long as Jared Padelecki and Jensen Ackles, who play Sam and Dean, respectively, were willing to do it.

"Supernatural" season 11 episode 16, "Safe House," is set to air on Mar. 23 on The CW.

Watch the promo clip here.