Ep 4. Slumber Party

Sam and Dean are back in action for "Supernatural" season 9, episode 4, titled "Slumber Party." In this episode, the brothers are reunited with their old friend Charlie Bradbury (Felicia Day), who is now working for a major tech company. When Charlie finds a magical object inside the company's headquarters, Sam and Dean are called in to help.

As they investigate, they discover that the object is actually a powerful, cursed amulet that has the ability to transport people into an alternate dimension. Taking place mostly inside a charming suburban home, the episode features a slumber party between Charlie, Sam, and Dean as they attempt to find a way to destroy the amulet and stop the evil forces that have been unleashed.

The episode has a playful and nostalgic tone, as it invokes classic 80s films like "The Goonies" and "Gremlins." There are lots of fun references to pop culture and geek fandom, as Charlie and Dean bond over their shared love of "LARPing" (live action role playing) and "Game of Thrones."

At its heart though, "Slumber Party" is a story about three friends coming together to face a common enemy. Charlie is a welcome addition to the cast, and her chemistry with Sam and Dean is one of the highlights of the episode. Felicia Day's performance is charming and nuanced, as she brings depth and vulnerability to a character that could have easily been a one-note geek stereotype.

The episode is also notable for its use of practical effects and creature designs. The alternate dimension that Sam and Dean find themselves in is populated by a variety of creepy and imaginative monsters, including a snarling, green-skinned giant and a pack of razor-toothed dolls. The horror elements are balanced by the humor and whimsy of the story, creating a fun and engaging episode that's perfect for Halloween season.

Overall, "Slumber Party" is a standout episode of "Supernatural" season 9. It's a tribute to classic genre films and a celebration of geek culture, while also delivering the heartfelt drama and thrilling action that fans have come to expect from the series. It's a great showcase for the talents of Felicia Day and the chemistry she shares with stars Jared Padalecki and Jensen Ackles. Whether you're a longtime fan of the show or just tuning in for the first time, "Slumber Party" is a must-watch episode that will leave you excited for what's to come.