|Series:||AKB48 Murder Mystery|
|First Appearance:||File 5|
|Last Appearance:||File 5|
|Number of Episode|
|2 (File 5, Testimony File)|
- "I love mystery stuff, and there are a whole lot of things to think about. In a time like this, if you sniff around for clues and get close to the heart of the matter, you can hone in on the culprit. So I’ll leave it all up to Detective Maeda. It’s okay, I’m sure Detective Maeda will apprehend the culprit! Because the truth always comes first!"
- ―Kitahara Rie's Testimonial[src]
Kitahara Rie (北原里英?), nicknamed Kitarie (きたりえ?) and Rie (りえ?), is a member of Team B. She is one of the primary characters in AKB48 Murder Mystery series. She is based on and is portrayed by Kitahara Rie.
All 89 members of AKB48 went to a duplex island owned by one of Akimoto Yasushi's friends for a CM Shoot. After their first day shoot was over, they went to their designated resthouse on the other island. It was assumed that she heard that Kato Rena was missing and was shocked to learn that the scream they heard was from Sashiko finding the girl's lifeless body in the dining hall.