When five sorority girls inadvertently cause the murder of one of their sisters in a prank gone wrong, they agree to keep the matter to themselves and never speak of it again, so they can get on with their lives. This proves easier said than done, when after graduation a mysterious killer goes after the five of them and anyone who knows their secret.
Tagline: The Sisters of Theta Pi Are Dying To Keep a Secret.
Genres: Horror, Mystery
Spoken Language(s): English
Release Date: September 9, 2009
IMDB Link: tt1232783
Production Countries: United States of America
Production Companies: Karz Entertainment, Summit Entertainment, House Row Productions
- Briana Evigan - Cassidy
- Leah Pipes - Jessica
- Jamie Chung - Claire
- Rumer Willis - Ellie Morris
- Margo Harshman - Chugs
- Audrina Patridge - Megan
- Julian Morris - Andy
- Matt O'Leary - Garret
- Maxx Hennard - Mickey
- Matt Lanter - Kyle
- Bulgarian - bg
- Czech - cs
- Danish - da
- Pacto Secreto - BR
- Serment Mortel - CA
- Sesterstvo nemilosrdných - CZ
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