When a terrified homeowner shoots an armed intruder during a "wrong door" drug raid, it initially appears to be a clear case of self-defense. However, attorney Kate McShane must defend her client, Norman Kagan, against a murder charge stemming from evidence planted by a corrupt Federal agent. Narcotics inspector Brenner (guest star Clu Gulager), resentful over the fatal shooting of a colleague by Kagan, refuses to acknowledge that the raid on Kagan's home was a mistake. Consequently, Kate realizes it's her client's word against that of the government agent in court.