Visible crew/equipment: During the scene where the Geckos first enter the Titty Twister, right after the shot where Seth takes the bottle of whiskey and glasses from the bar the camera cuts between shots of the bar, right after the band finishes the song a camera is visible in the lower right corner. (00:50:25)

From Dusk Till Dawn (1996)
1 visible crew/equipment mistake - chronological order
Directed by: Robert Rodriguez
Starring: George Clooney, Harvey Keitel, Salma Hayek, Juliette Lewis, Cheech Marin, Quentin Tarantino, Danny Trejo
Continuity mistake: Throughout the entire film the tattoo on George Clooney's neck moves position and changes shape.
Carlos: What? Were they psychos, or...?
Seth Gecko: They look like psychos? Is that what they looked like? They were vampires. Psychos do not explode when sunlight hits 'em. I don't give a fuck how crazy they are!
Trivia: Sex Machine's 'crotch gun' is used in Desperado, which also stars Quentin Tarantino and Danny Trejo (the barkeeper).





Answer: Because he is a sadistic lunatic and he wanted to. He has a lot wrong with his brain, paranoia, psychopathy, hallucinations, sexual predation. Probably more. He is a deeply disturbed individual and killing Gloria gave him pleasure.
lionhead