Killer Wears White (1980)

In a tough small town, the sheriff's determined wife battles a persistent gambling problem. Her husband, a veteran lawman, faces difficult choices balancing justice with protecting his family. He's tasked with training a new, eager police officer. Though different in experience, they develop an unexpected partnership as they tackle dangerous criminal cases. The rookie's secret martial arts skills become essential in fighting crime, forging a strong bond of respect and dependence between the seasoned sheriff and his protégé.