The game is played from the perspective of a crime scene investigator tasked with solving a series of murders.

Episode 0 acts as a demo for the game, with the player being asked to assist Detective Burton in locating his uncle's ashes.

Episode 2 is entitled "The Watcher" and concerns a purported suicide attempt by a young man in an apartment building.

Episode 3 is entitled "Snake in the Grass" and concerns an assortment of cases occurring within a garden.

[2] Each episode of casebook received moderately positive reviews, with reviewers praising the game's revival of FMV technology while criticizing the game's mini-games as tedious and not interesting.