The shows always opens with Kiefer Sutherland reading "The following takes place between..." This opening has been recorded over and over for three seasons by Sutherland, until the creators realised that they already had recordings of him saying the sentence with all the hours of the day. It took them two years to realise it, and since then Sutherland doesn't have to record the speech for each episode.
The phone number 310 597 3781 appears in various episodes and is the 24 fan phone which viewers can dial to speak to a member of the 24 crew if they're lucky. Even stars of the show like Kim Raver and Carlos Bernard have answered it in the past.
Network: FOX ( USA) Type: Scripted Genres: Action, Adventure, Crime, Drama Status: Ended Airs: Mondays at 09:00 pm Runtime: 60 Minutes Premiere: November 06, 2001 Ended: July 14, 2014