"Trapped in the Closet (Chapter 1 of 5)" is an R&B song written and produced by American singer R. Kelly for his tenth studio album TP.3 Reloaded. It was released in early 2005 as the album's lead single together with "Sex in the Kitchen". The song is also featured on the soundtrack of the movie inspired by the song Trapped in the Closet Chapters 1-12. VH1 ranked it #41 on its list of the 100 Greatest Songs of the '00s.

The first chapter of "Trapped in the Closet" begins with the narrator, Sylvester (portrayed by Kelly), waking up and realizing that he is not in his own bed. He recalls leaving a nightclub with a strange woman the previous night, and that he was in her bed. As Sylvester is scolding himself for what he has done as a married man, the woman comes back into the bedroom from the bathroom. Sylvester tells her that he has to leave quickly. She tells him he can't leave out the door because she hears her husband coming up the stairs. Sylvester says he'll jump out the window, but she reminds him that they are on the fifth floor. Sylvester thinks frantically, and then decides to hide in the closet. A few seconds later, the husband walks in, and the couple ends up fooling around on the bed. Sylvester reflects that the woman deserves an Oscar for her skillful acting. Suddenly, Sylvester's cell phone rings and he hurries to put it on vibrate. The husband hears the ring and suspects something is wrong. He searches the house for another person. He looks behind the shower curtain, under the bed, in the dresser, and then walks towards the closet. The first part ends with Sylvester reaching for his Beretta and the husband opening the closet.

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