Black & White (1999)

"If you can't trust your partner, who can you trust?"

Chris O'Brien, devote Catholic and rookie cop with LAPD, is assigned to partner with the hard-edged, street-smart Nora Hugosian. A serial killer is loose, and all the victims are low-life guys whom Nora has dealt with. So, when the tire tracks of a police car are found at a murder scene, she's the prime suspect of internal affairs investigator Simon Hertzel...