It looks like Bobby will be one of Dean's last hopes on Supernatural.

'Supernatural' Season 10 Spoilers: Jared Padalecki Calls Finale 'Very Traumatizing', Compares To 'Swan Song'

The Winchester's surrogate father will come back from the dead during "Inside Man," and Jim Beaver's former hunter will need to get back in the swing of things if he plans on evading the angels while he looks to help the ailing Dean.

"Sam enlists Castiel to find a means to help save Dean from the Mark of Cain, which involves communicating with a very old friend up in heaven [who is] none other than Bobby Singer," executive producer Jeremy Carver teased.

Castiel & Shocking Source To Track Missing Grace On 'Supernatural', Misha Collins Talks Angel's Fading Powers

Considering Dean (Jensen Ackles) is having nightmares a seeing black eyes in his reflection, it looks like circumstances have taken a turn for the worse. The elder Winchester believes the answer lies in learning to control the Mark but Sam (Jared Padalecki) is hell-bent on getting Cain's brand off his brother.

"With Dean the way he is, this is all we got," Sam tells Bobby over a very literal version of angel radio, much like during "Dark Side of the Moon" (see video here).

Find out if Bobby's mission will be a success when "Inside Man" airs on April 1.

Supernatural airs Wednesdays at 9 p.m. ET on The CW.