One Good Cop is a 1991 American action drama film directed by Heywood Gould and starring Michael Keaton as Artie Lewis, a cop who becomes the legal guardian of three orphaned girls after their father, his partner, is killed in the line of duty.
As Artie struggles to balance his new responsibilities as a single father with his job as a detective, he becomes embroiled in the investigation of his partner's death. His search for the killer leads him to uncover a web of corruption that reaches all the way to the top of the city's criminal underworld.
As tensions rise and the danger escalates, Artie finds himself torn between his duty as a cop and his commitment to his new family. With the help of his fellow officers, including his partner's former partner and lover, Rita (Rene Russo), Artie must navigate a maze of lies and deception to bring the killer to justice and protect the girls from further harm.
Along the way, Artie faces his own demons and must confront his own limitations as a father and a man. With intense action sequences and powerful performances, One Good Cop is a gripping tale of justice, family, and sacrifice.