The trials were taking their toll on Sam. He was exhausted. Dean felt just as bad seeing him brother in such a state. He felt responsible.

Cas has been off the grid too and no matter how many times Dean'd prayed to him, he's received no reply whatsoever.

After finishing a case, when Dean was sure that Sam was fast asleep, he walked out of the motel room they were staying in.

The older Winchester took a deep breath and closed his eyes as he started praying to his Angel friend. Maybe he'd reply this time.

"Hey Cas. Hope you can hear me." Dean spoke up. "Sam's beat. Maybe you could come here from wherever you are... fix him up or something."

"Man, it'd be great to hear from you." He added.