In "Crash", who is Graham's partner?

In “Crash,” Graham’s partner is Ria. She is played by Jennifer Esposito and works alongside Graham Waters, Don Cheadle’s Los Angeles detective.

Ria and Graham are introduced while investigating a shooting involving two undercover police officers. Their professional partnership also overlaps with a romantic relationship, although Ria becomes frustrated by Graham’s emotional distance and the unresolved crisis involving his missing brother.

One memorable early scene shows Graham and Ria involved in a minor collision with Kim Lee, a Korean woman. Their argument exposes the film’s recurring focus on racial assumptions and tense encounters between strangers. Ria is Latina, and the scene also highlights how quickly personal conflict becomes entangled with cultural stereotypes.

The film’s large ensemble can make character relationships easy to confuse. Graham’s other important police connections include Detective Conklin and Officer Hansen, but neither is his partner. Ria remains Graham’s named partner throughout the central storyline.