Police Quest: 1, 2, 3 and "4"
Sierra On-Line published lots of games back in the 80s and the 90s and was famous for the various "Quest" series. Think about King's Quest, Quest for Glory, Space Quest, Leisure Suit Larry ("Love Quest"?). I'm sure you remember a few.
Police Quest wasn't perhaps one of the most popular Sierra franchises, but many fans remember those point & click adventures fondly.