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For the list of items that are rewarded to the player during the Additional Investigation of cases, see Additional Investigation/Rewards.
C70Chapter4

A typical Additional Investigation cover art pre-World Edition (Eurasia).

Additional Investigation is the post-indictment chapter of each case, and is considered to be the last chapter of the case.

Premise

In every single case after the killer is arrested, with the exception of the tutorial cases, you must complete a chapter called Additional Investigation to unlock the next case.

For Grimsborough, the player must check up on some of the characters who were suspected but turned out to be innocent. The tasks range from helping out innocent suspects who are in need of something, get more information about the most suspicious, or even catching post-murder findings (such as drug-dealing).

In some circumstances, there will be innocent suspects whom the player will have to help by examining an item before investigating a scene. The player must examine an item before investigating a scene where their help is required. Sometimes the innocent suspect already has something in mind and will tell the player a list of tasks he/she will need help on, so the player will only need to investigate, examine, analyze (if necessary), and report back to the innocent suspect.

Only one suspect needs to be spoken to in Case #1, and two suspects will be spoken to in Cases #2, #51, #52, and #56, but in Case #56, one suspect has to be dealt with at a time. Cases #3-#50 will have three suspects whom the player needs to talk to for the tasks aforementioned. For Cases #53 and #55, there will be three innocent suspects to check up on, but one of them cannot be checked up on until the other two are checked up on first. For Case #54, there will be two legs—one with the killer and one innocent suspect, and the other with another innocent suspect.

For subsequent seasons, the Additional Investigation shifts its focus from helping innocent suspects to investigations that do not involve the murder. In fact, findings made during the Additional Investigation may even hold a greater overall significance to the story's plot than findings made during the main investigation. There is no telling how many suspects need to be checked up on and/or which ones will reward the player for helping them out and/or after the player gained more information about them.

In certain circumstances, there is a requirement for killers to be interrogated once again during the Additional Investigation. As of World Edition, non-murder suspects (quasi-suspects) may also require stars to be interrogated. These quasi-suspects may also be the ones to reward the player.

Unlock conditions

Plot continuity

Starting from the sixth district of Pacific Bay, however, the Additional Investigation chapters have been named differently in an effort to ensure that all chapters of each case are tied-in with the game's story and its related canon.

Cover arts

Grimsborough

Pacific Bay

World Edition

Mysteries of the Past

The Conspiracy

Travel in Time

Trivia

  • The Death of Rosa Wolf is the only case with an optional Additional Investigation.
  • Starting from Corpse in a Garden, there will always be one Additional Investigation leg that gets you a burger for completion of that leg. In addition, you will have one leg that rewards you with clothes starting from The Grim Butcher.
  • Effective in The Wollcrafts' Creature, the Additional Investigation reward of XP changes to a reward of an amount of coins, given that the majority of players will have already unlocked everything in the Avatar Shop by that point.
  • Victor Wollcraft is the only suspect to give three burgers in the Additional Investigation.
  • A Brave New World is the only case in which you are rewarded with only a burger and free clothes.
  • There Will Be Blood is the only Grimsborough case to have a unique Additional Investigation cover art, i.e., its cover art does not depict images of the suspects to be interrogated during the chapter.
  • Welcome to Pacific Bay, The Murder of Amanda Love, The Murder of Mrs Stanbury and The Dead and the Beautiful do not include a playable Additional Investigation.
  • Starting from Eurasia in World Edition, the cover art for the Additional Investigation is shared by an entire region/district.

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