The Civil Rights Division of the Department of Justice investigated the allegations that the Missoula Police Department ("MPD") discriminated against women in its response to sexual assault crimes. The investigation found that deficiencies in MPD's response to sexual assaults which compromised the effectiveness of sexual assault investigations from the outset, made it more difficult to undercover the truth, and had the effect of depriving female sexual assault victims of basic legal protections. This letter summarizes the investigation and findings.