While 'CSI: Crime Scene Investigation' was confirmed for a Season 15, back in March, fans are still waiting for its release date on September 28, 2014.

Recently, the production team for the show has listed and announced a few changes to the cast, more specifically, some exciting new additions to it. One of the new actors joining the cast is 'The Fringe' actor Mark Valley. The 'Human Target' star will play the role of a private investigator, who at one point in his life was a detective.

Also, sources claim that Valley's partner will go missing on the show, and it will be up to him and the character Finlay (played by Elisabeth Shue) to solve the case. On a side note, some say that there will be somewhat of a love interest between the two new partners.

Beyond Mark Valley, 'Franklin & Bash' star Mark-Paul Gosselaar will be playing a set of twins on the show. The actor who is best known for his Zach Morris from 'Saved by the Bell' is set to take on the roles of Paul Winthrop and Jared Briscoe.

The two characters on the show are practically polar opposites, with one sitting on Death row, and the other working as a real estate magnate. It has been revealed that the successful twin strongly believes in his accused brother's innocence.

Additionally, 'CSI' has also signed Disney's Bella Thorne onto the cast list for the role of a popular high school girl. The 'Shake It Up' star will take on Hannah, who is athletically gifted and incredibly smart. However, the star student will blip on the detectives' radar, as a fellow student of hers turns up dead.