Season 1 Netflix, 2018 Watch now Tackling different mysteries in each episode of this game show, seven sleuths get closer to solving the biggest one of all: What happened to Project D? Season 2 Netflix, 2019 Watch now Amateur detectives attempt to untangle a string of mystifying cases, which may be connected to an enigmatic figure known as the Flower Killer. Season 3 Netflix, 2021 Watch now With old faces back on the team, the detectives investigate a series of bewildering cases that seem to be linked to a shady organization.