The hit crime drama television series 'CSI' will return for a 15th season on Sunday, Sept. 28, at 10/9c on CBS Television Network with Finlay (played by Elizabeth Shue) coping with a bomb threat in Episode 1 entitled "The CSI Effect."

The official synopsis of Episode 1 released by the show runners reads, "Finlay must deal with a bomb planted in her car, while Russell gets a call from someone claiming to be the Gig Harbor killer."

The 'CSI' Season 15 promo video shows Russell (Ted Danson) in deep trouble as he comes across a trailer filled with photos of Finlay. As this appears to be very strange, it looks as if someone's obsessed with Finlay and her life. Now, the question is who has taken such an interested in Finn?

Meanwhile, fans can expect to see several guest stars in 'CSI' Season 15. While Mark Paul Gosselaar ('Saved by the Bell') will be portraying the characters of twins Jared Briscoe and Paul Winthrop, 'Fringe' alum Mark Valley will appear in the role of a detective who will be working closely with Finlay.

Fans should also expect some romance in the upcoming season of 'CSI', as Finlay develops feelings for the character portrayed by Valley. A report by TVLine predicts that the two will not be getting along in the beginning, but they will feel a strong attraction for each other after the case is closed.

Meanwhile, Skipp Sudduth ('The Good Wife', 'Criminal Minds') will appear as a guest star in the upcoming 'CSI' Season 15 installment. He will appear in an October episode of 'CSI' and portray the character of Mr. Lusk, a high school janitor who witnesses a horrifying crime. Incidentally, Sudduth has directed five episodes of 'CSI: NY' and this will be the first time for him to be in front of the camera for the original 'CSI' show.

There is news that another 'CSI' spin-off is about to make its debut, titled 'CSI: Cyber'. The show will feature a lot of familiar faces like Patricia Arquette, Luke Perry, Bow Wow, and James Van Der Beek.

The premiere can be watched online by clicking here.