Key is a 2011 Telugu-language psychological thriller produced by Sukumar Reddy for Dream Theater Entertainments and directed by Nagendra Prasad. Jagapati Babu plays the lead role and the music was composed by Vijay Kurakula. The film is a remake of the English film Exam.

Plot

The film begins with a special examination in a closed room with security for a notable post in a Prestigious Company. Here, nine candidates appear, and the Invigilator narrates that they select the one who answers based on the question within 90 minutes. They are appealing four conditions that disqualify them from crossing the bridge.