While characters, including Castiel, have come back from the dead before on Supernatural, his demise on the Nov. 5 episode is likely very real. ... As viewers may remember, Castiel had made a deal with Entity in Season 14 to save Jack (Alexander Calvert). He promised Entity that he would die when he was truly happy.

Will Castiel come back to life?

After Sam and Dean avert the Apocalypse, Castiel is resurrected once more by God, now more powerful than ever as a seraphim. He heals Dean's injuries and resurrects Bobby and reminds Dean that he got what he wanted: no Apocalypse, no Paradise, just more of the same.

Is Cass dead forever?

While trying to lock Lucifer in an alternate reality, Castiel was killed once more by the Fallen archangel. Following his death, Castiel was then sent to The Empty, where all angels and demons go when they die, to sleep for eternity. He was awoken from his eternal slumber when Lucifer's son Jack called his name.