Kevin deciphers the tablet and figures out how to close the gates of Hell. He tells Sam and Dean that according to the tablet one person must face a series of three tests designed by God. The first one – kill a hellhound. Sam and Dean argue over who should complete the trials.
Elenco: Jensen Ackles , Jared Padalecki , Misha Collins , Alexander Calvert , Mark Pellegrino , Mark Sheppard , Alona Tal , Candice Accola , Felicia Day , Genevieve Padalecki , Jeffrey Dean Morgan , Julie McNiven , Katie Cassidy , Lauren Cohan , Osric Chau , Richard Speight Jr. , Rob Benedict , Samantha Ferris , Ty Olsson .