| Series: | Angel |
| Season: | 2 |
| Episode: | 13 |
| Production: | 2ADH13 |
| Teleplay: | David Greenwalt |
| Story: | David Greenwalt Joss Whedon |
| Director: | Bill L. Norton |
| Guests: |
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| Episode List: | List of Angel episodes |
| Season Article: | Angel season 2 |
| Prev: | Blood Money |
| Next: | The Thin Dead Line |
"Happy Anniversary" is episode 13 of the season 2 of the television show Angel.[1] In it, Angel and the Host must stop a man who wishes to stop time itself after he learns his girlfriend is about to break up with him. Meanwhile, Wesley, Gunn and Cordelia attempt to find clients for their new detective agency without Angel.
Wesley and Cordelia, cleaning up their new office, discuss their future as investigators without Angel, and most likely without enough clients to keep their business running for long. At the hotel, Angel awakes to the sounds of the Host singing "The Star-Spangled Banner" down in the lobby. He tells Angel about a man who came to sing at Caritas, and that when he read the man's aura, the Host was knocked out when he realized the world would be ending. Unfortunately, the man left before the Host came around and the Host currently has no idea who or where the man is.[2]
The man singing at the bar was actually a physicist named Gene Rainey, who is working on a formula to stop time. His girlfriend, Denise, visits him and they talk of their plans for their first anniversary. Without any other leads on Gene, Angel and the Host check out karaoke bars and are pointed towards the college that Gene attends. After an unsuccessful attempt to test his formula, Gene leaves his work area and two Lubber demons emerge from the shadows to alter the formula Gene has been working on. Wesley, Gunn and Cordelia mope about their job troubles but Virginia stops by with food, champagne, and a case they can take to earn a lot of money.
Gene is successful with the initial test of his equipment. Angel and the Host check out yearbooks at the college library to look for the name of the man. Denise confesses to her friend that she has to break up with Gene because things aren't working out and plans to break up with him that night after sleeping with him. Gene overhears this and returns to the lab, dejected. While getting directions to Gene and the physics lab, Angel is attacked by the Lubber demons.
Finally, at the physics lab, it is discovered that Gene is gone and so is his equipment. He has plans to freeze time during a moment of love between him and Denise. Gunn kills the demon that he and the others were hired to protect a rich family from. Wesley discovers the real truth behind the murder - that one of the family hired the demon to kill one of the men and gain control of the family money.
Angel and the Host take care of several Lubber demons who tried to stand in the way, then rush to stop Gene before it is too late. Gene freezes Denise and himself in a moment of passion, but Angel is able to get past several more Lubber demons then stop the machine and undo the whole process. Gene says he didn't know the overall effects of his actions; he just didn't want to lose his love. However, Angel and the Host tell Gene that things need to keep moving on, otherwise it wouldn't be interesting. As Gene goes to get some beer, the Host tells Angel that this is the first time in a long time that he is connecting with someone. Angel reflects on how he treated his team, and feels bad knowing he left them out in the cold. At their new office, Wesley, Cordelia, and Gunn party in celebration of their success until a man shows up in need of their services.
Angel reveals to the Host that he fired his team and cut off all ties to keep them away from consequences they couldn't handle (like forcing them to do terrible things to destroy Wolfram & Hart with them), even if it meant mistreating them.
The physics building featured in the episode where Gene Rainey's lab is located shows the exterior of the Valley Life Sciences Building at the University of California, Berkeley.