Ep 10. Heaven and Hell

In Supernatural season 4 episode 10, titled "Heaven and Hell," the Winchester brothers continue their quest to stop the demon Lilith from breaking the 66 seals that will release Lucifer from his prison and bring about the apocalypse.

The episode begins with a young woman named Anna (played by Julie McNiven) waking up in a hospital, unsure of how she got there. She soon discovers that she has the ability to hear angels' conversations, and one of them warns her that she needs to protect Sam and Dean Winchester, who are currently on the hunt for someone who can help them stop Lilith.

Meanwhile, the demon Ruby (played by Genevieve Padalecki) reveals to Sam that she knows where Lilith is, and convinces him to follow her to an abandoned warehouse where Lilith is supposedly hiding. However, when they arrive, they discover that Lilith has possessed a young girl and is using her as a vessel. Sam is initially hesitant to attack a child, but Ruby urges him to do so, arguing that it's the only way to stop Lilith.

Back at the hospital, Anna confides in Dean about her abilities and tells him that she needs to help them stop Lilith. She reveals that she is actually an angel who fell from grace and lost her powers, and that she believes that the only way to prevent the apocalypse is to kill Sam, who is destined to be Lucifer's vessel.

As the episode progresses, the lines between good and evil become increasingly blurred, as Sam and Dean struggle to determine who they can trust and whether the ends justify the means. Meanwhile, Anna learns the truth about her past and begins to question her own motivations and loyalties.

"Heaven and Hell" is a tense and action-packed episode that explores some of the show's most complex themes, such as the nature of good and evil, the consequences of choice, and the lengths that people will go to in order to protect those they love. With great performances from the entire cast and some truly shocking twists and turns, it's a standout installment in what is already one of television's most compelling and entertaining shows.