Impulse (1990)

In Los Angeles, Detective Lottie Mason (Theresa Russell) works undercover as a whore on the streets or a junkie with the vice-squad leaded by the corrupt Lt. Joe Morgan giving support and arresting clients and drug dealers. She is also having sessions with a police psychologist for evaluation because she killed a criminal. She also has troubled relationships and high debts with her credit card. When she works with the District Attorney Stan (Jeff Fahey), they feel attracted for each other and have an affair. After an assignment where she was almost killed, she has a flat tire while driving home. She goes to a bar to kill time while her car is fixed. Completely upset, she meets the charming criminal Tony Perón (Shawn Elliott) that Stan is chasing, but unknown for her, and he offers a huge amount for her to go to his place. While in his fancy house, she regrets and tries to find a meas of escape. But she witnesses the execution of Tony, and she anonymously calls the police. In the house, she finds a key of a locker where there is a bag with one million dollars that Tony stole from drug dealers. While the police search the unknown woman, Lottie lives a dilemma about what to do with the money.

I have just watched "Impulse" at least five times so far, and in my opinion it is one of the best thrillers of the 90's. The good story has a great direction of Sondra Locke, the characters are very well developed, and Theresa Russell is amazingly beautiful and sexy and has one of her best performances. The ambivalent conclusion is perfect, and the viewer can only guess the destination of the money. Unfortunately this movie is totally underrated in IMDb, misguiding the readers. My vote is nine.

Title (Brazil): "Tentação Perigosa" ("Dangerous Temptation")