A Killer Within (2004)

Dallas attorney Addison Terrill (Howell) comes home one night to find his wife brutally murdered with the words "We're even now" scrawled across the bedroom wall. The cops suspect that Addison killed her, and now he must race through the underside of Dallas to find the only other suspect. His ally is a grudging ex-cop (Esposito) who knows what it takes to deliver justice. If they can overcome their differences, they'll be able to solve the case before anyone else gets hurt.