Lethal Weapon (1987)

Following the recent death of his wife, Los Angeles Police Department (LAPD) narcotics Sergeant Martin Riggs, a former Special Forces soldier, has become suicidal and erratic. Despite the protests of the police psychiatrist, the captain believes Riggs is faking his psychosis to be forcibly retired with a generous pension and partners him with fellow war veteran and Homicide Sergeant Roger Murtaugh. Riggs and Murtaugh do not get along as Murtaugh is equally dismissive of Riggs’s mental state, but is eventually convinced Riggs is truly suicidal.

Murtaugh is contacted by a former Vietnam War friend, Michael Hunsaker, ostensibly to help his daughter Amanda escape her life of prostitution and pornography, but Amanda kills herself by jumping from an apartment balcony before she and Murtaugh meet. Her autopsy shows she was fatally poisoned with tainted drugs, indicating she was potentially murdered. Riggs and Murtaugh attempt to question her pimp, but are assaulted after finding drugs on the premises, forcing Riggs to kill the pimp to save Murtaugh’s life. Their final lead is Dixie, a prostitute who witnessed Amanda’s death, and whom the pair believe may have poisoned her.