Kate Whitney: Why'd you come?
Luther Whitney: I couldn't have my daughter thinking I was a murderer.
Kate Whitney: No, I mean why did you come to the restaurant this afternoon? You must have suspected something, or else you wouldn't have been prepared.
Luther Whitney: My daughter wanted to see me.
...
Kate Whitney: But then you go to the police. That's what innocent people do. They go to the police.
Luther Whitney: Sure. And that young man who was just here, he'd believe me over the President, wouldn't he?
Kate Whitney: Well, why should I believe you?
Luther Whitney: Because I swear to you, Kate. I swear to you on Mattie's grave. Yeah, that's right. Your mother's grave, I'd kill myself before I lied about that.
Kate Whitney: Oh Jesus, Luther.
Luther Whitney: Yeah, I know.
  
  
  
  
  
   
  
  
Luther Whitney: I couldn't have my daughter thinking I was a murderer.
Kate Whitney: No, I mean why did you come to the restaurant this afternoon? You must have suspected something, or else you wouldn't have been prepared.
Luther Whitney: My daughter wanted to see me.
...
Kate Whitney: But then you go to the police. That's what innocent people do. They go to the police.
Luther Whitney: Sure. And that young man who was just here, he'd believe me over the President, wouldn't he?
Kate Whitney: Well, why should I believe you?
Luther Whitney: Because I swear to you, Kate. I swear to you on Mattie's grave. Yeah, that's right. Your mother's grave, I'd kill myself before I lied about that.
Kate Whitney: Oh Jesus, Luther.
Luther Whitney: Yeah, I know.
 Kate Whitney : Why'd you come? 
 Luther Whitney : I couldn't have my daughter thinking I was a murderer. 
 Kate Whitney : No, I mean why did you come to the restaurant this afternoon? You must have suspected something, or else you wouldn't have been prepared. 
 Luther Whitney : My daughter wanted to see me. 
... 
 Kate Whitney : But then you go to the police. That's what innocent people do. They go to the police. 
 Luther Whitney : Sure. And that young man who was just here, he'd believe me over the President, wouldn't he? 
 Kate Whitney : Well, why should I believe you? 
 Luther Whitney : Because I swear to you, Kate. I swear to you on Mattie's grave. Yeah, that's right. Your mother's grave, I'd kill myself before I lied about that. 
 Kate Whitney : Oh Jesus, Luther. 
 Luther Whitney : Yeah, I know. 
http://www.moviequotedb.com/movies/absolute-power/quote_43009.html