Star Trek: The Section 31 Files is an audio series by Darker Projects that explores the darker side of the Federation, set on a starship that defends the Federation against dangers from which it cannot protect itself. The series relies on voice talents from across the globe for the production. The series ran for three seasons and 29 episodes and was followed up by Star Trek: Lost Frontier. It takes place in an altered timeline of the universes of Star Trek: Hidden Frontier and Star Trek: Defiant. Its separate fourth season ran only three episodes.