Deadline

Deadline is an interactive fiction computer game published by Infocom in 1982. It was written by Marc Blank and was one of the first interactive mystery games. Like most Infocom titles, Deadline was created using ZIL, which made it easy to port the game to the popular computer platforms of the time, such as the Apple II and the Commodore 64. It is Infocom's third game. The character in Deadline is a nameless police detective who is called to a sprawling Connecticut estate to investigate the apparent suicide of wealthy industrialist Marshall Robner. At first, the case seems straightforward: The body was discovered in the library, which was locked from the inside, and the cause of death was an overdose of prescribed antidepressants. But something doesn't feel right. Could someone have killed Robner for his money? Had he made an enemy through his business dealings? Or was there some other motive? With the help of level-headed Sergeant Duffy, the player has twelve hours to solve the case before it is closed forever.