Beware of the Husband (1964)

Lau Chi-Ping aroused his wife Au Suk-Man's suspicion in order to entertain him at night, but the flat driver Ah Fook pretended to be Ping and hitched a ride with the prostitute Wong Mei-Yuk. Hou Yu calls the Lau family to look for Ping, and Min becomes more suspicious of Ping. Ping donates money to help the widow of his friend Wong Yee-Wan. Min finds out about this and confronts Yun. Shi Yu comes to look for Fook to expose his lie.