Ep 3. Happy Death Day

In Ghosts season 1 episode 3, titled "Happy Death Day," Alison and Mike decide to host a birthday party for Julian, but things quickly take a turn for the worse when they realize that it also happens to be the anniversary of Julian's death. The ghosts in the house start to act up, causing chaos and confusion for the living inhabitants.

Meanwhile, Julian's ghost is convinced that he can't move on until he figures out what happened to him on the night of his death. He enlists the help of Pat, a fellow ghost who claims to be a detective, to solve the mystery and finally find peace.

As the party rages on, the ghosts become increasingly restless and start to cause more and more problems. This leads to some hilarious moments, as the living inhabitants attempt to navigate the chaos while trying to keep up appearances for their guests.

Despite the chaos, Alison and Mike manage to pull off a successful birthday party, with everyone having a great time - even the ghosts. In the end, the mystery of Julian's death is solved, and the ghosts are able to move on to the afterlife.

Overall, "Happy Death Day" is a fun and entertaining episode of Ghosts that combines humor with a touch of mystery. It's a great showcase for the show's talented cast and writers, and will leave viewers eager to see what happens next in the quirky world of this supernatural sitcom.