Ep 2. Mamma Mia

Mary Winchester has returned from the dead and joined her sons Sam and Dean on their missions. In the second episode of Season 12, Mamma Mia, we see the Winchesters investigating a case where a woman has been killed by what seems to be a ghostly presence.

The brothers soon realize that the case is linked to the Men of Letters bunker, where the Winchesters have set up their base of operations. It seems that a powerful entity has been released from its prison and is now causing havoc in the bunker.

Sam and Dean are not alone in their investigation, as they are soon joined by their mother Mary, who is still trying to acclimate to the modern world. The Winchesters also encounter another hunter named Eileen Leahy, who has a personal connection to the case.

As the Winchesters delve deeper into the mystery, they discover that the entity they are facing is no ordinary ghost. Instead, they are dealing with a powerful witch who has been trapped for centuries.

Meanwhile, Mary is still coming to terms with the fact that she has been gone for over 30 years, missing out on her sons' lives. She also grapples with the knowledge that her family has been involved in the supernatural world all along.

As the episode progresses, the Winchesters, Mary, and Eileen must work together to stop the witch before she can cause any more harm. Along the way, they confront their own personal demons, and Mary begins to understand the complexities of the life her sons have been living.

The episode also serves as an introduction to Eileen, who will become an important ally to the Winchesters in the future. With her help, they are able to defeat the witch and restore order to the Men of Letters bunker.

Mamma Mia is a thrilling episode that blends action, suspense, and emotional depth. It shows the Winchesters continuing to deal with the fallout from Mary's return, while also facing new supernatural threats. Meanwhile, Mary struggles to find her place in a world that has changed so much since her death. All in all, it is a strong installment in a series that has continued to captivate audiences for over a decade.