Supernatural Season 8 Episode 21

When Sam and Dean receive a distressing video message from Kevin Tran (guest star Osric Chau), they set about trying to uncover the Third Trial. The boys make a discovery that sends them to a casino in Colorado, to find a mysterious recluse (guest star Curtis Armstrong) who may be able to fill in the holes in Kevin's research. Meanwhile, Crowley is on a winning streak. Castiel tries to elude Naomi and the angels hunting him. Robert Duncan McNeill directed the episode, written by Ben Edlund.