Officer Pete Davis: Arrest you? I could kill you.
Michael Carr: What's it going to take to convince you? Me in a body bag?
Michael Carr: What is it with you.
Karen Carr: With who?
Michael Carr: You and Pete... he wants you... he thinks you want him.
Roger Graham: Don't shoot! I'm a lawyer.
Michael Carr: I think our cop friend is a little too tightly wound.
Answer: Pete was a psychopath and a murderer who did not think or act in a logical, reasonable, or restrained manner. He had become so enamored of Michael and Karen and their affluent lifestyle, that he went to extreme and dangerous lengths to ingratiate himself with them. He was not at all rational.
raywest ★
And also, his years of being a patrol cop and seeing the brutality of society on different calls may have made him snap. I mean, look how heartless he was-he throws a naked woman out into the street in a dark alley and leaves her there after having sex with her in his patrol unit, no regards for anything or anyone at all.