. >> the suspect, michael ray stafford, is brought in for questioning. >> have a seat right there. do you want to tell me where you got the knifes from? >>> coming up -- >> oh, i'm innocent. >> investigator wheeler finds both the suspect and the victim unwilling to cooperate. >> the victim doesn't want to be labeled as a snitch. and i quit smoking with chantix. knowing that i could smoke during the first week was really important to me. [ male announcer ] along with support, chantix is proven to help people quit smoking. chantix reduced my urge to smoke -- and personally that's what i knew i needed. [ male announcer ] some people had changes in behavior, thinking or mood, hostility, agitation, depressed mood and suicidal thoughts or actions while taking or after stopping chantix. if you notice any of these, stop taking chantix and call your doctor right away. tell your doctor about any history of depression or other mental health problems, which could get worse while taking chantix. don't take chantix if you've had a serious allergic or skin reaction to it. if you develop these, st