The Stitchwraith Stingers are epilogues featured at the end of every Fazbear Frights book, except Felix The Shark, each telling one part of a overarching story, revolving around a detective investigating the mysterious entity known as the Stitchwraith, with both parties unaware of other evil forces pulling the strings.
Some of the standalone stories from the mainline anthology are featured in the epilogues, creating a connected universe. All stories have various roles with varying impacts, whether the events of the story are loosely referenced, cameo the animatronic from the story, or are direct prequels to the epilogue's overarching narrative.