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You have 12 hours to solve the murder of Mr. Marshall Robner. If it was a murder... Mr Robner was found locked in his library, dead -- from a lethal dosage of anti-depressants. Friends and family are calling this a suicide of depressed wealthy industrialist. As Chief of Detectives, you find something just doesn't smell right about this case. You go out on a quest to find a suspect, his motive, method, and opportunity.

Difficulty Level: Expert


Deadline Atari ST Starting location

Promo Images

Deadline Magazine Advertisement Pages 104-105

Alternate Titles

  • "Who Killed Marshall Robner?" -- Working title
  • "Was It Murder?" -- Working title
  • "Deadline: An INTERLOGIC Mystery" -- Tag-lined title

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A bug in the program made it possible to follow a certain set of instructions that resulted in Ms. Dunbar committing suicide while another Ms. Dunbar continued to walk around the house. Upon hearing the gunshot fired by the now-dead Ms. Dunbar, the alive version of Ms. Dunbar executed her AI script faithfully and ran into the room to see what had happened. This led to an amusing exchange with the game parser:

>examine dunbar
Which Ms. Dunbar do you mean: Ms. Dunbar, or the body of Ms. Dunbar?


One of the characters in Deadline, Sargent Duffy, also appears in Infocom's later mystery games The Witness, and Suspect.


Infocom gave Deadline a difficulty rating of "Expert", largely due to the abundance of evidence and false leads to be sorted out within a short timespan.


This was Infocom's third game but the first one to include "feelies". The feelies include typed interviews, 3 pills in a small bag (found at the crime scene), a photograph of the crime scene, the coroners report, and a note from the family attorney.


Infocom's famous 69,105 number is used in this game to refer to the serial number on the pharmacy label on the tablets.


(From The New Zork Times Vol.3 No.2 Spring 1984)

Some statistics about Deadline:
  • Apparent number of rooms (those seen by the player): 49
  • Number of rooms: 51 (for various arcane programming reasons, some rooms are inaccessible to the player)
  • Number of different ways to die: 2
  • Number of words in vocabulary: 656
  • Number of takeable objects: 37


  • Computer Gaming World
    • November 1996 (15th anniversary issue) – #104 in the "150 Best Games of All Time" list
Inmformation also contributed by Nélio, Ricky Derocher, saladpuncher and Sciere

Related Web Sites

  • Deadline on Wikipedia (more information about the game)
  • Deadline's wikipedia page (Here you can find all sorts of info about the game.)
  • Infocom homepage (At this site you can find information on ALL of Infocom's interactive games, Infocom related articles, sample transcripts, InvisiClue hints, walkthroughs, maps and information on buying Infocom games today.)
  • The Commodore Zone (All about Deadline - introduction, images, related links and comments area.)
  • The Infocom Gallery (High-quality scans of the grey box package and manual of Deadline.)
Belboz (6582) added Deadline (Atari ST) on Jan 27, 2003
Other platforms contributed by Brian Hirt (10025), S Olafsson (49100), Droog (522), Kabushi (252634), Terok Nor (29821), Игги Друге (46340), Belboz (6582) and me3D31337 (62167)