When Fisher's mentor turns up dead, Kirsten's stitch reveals the officer was murdered by a serial killer she's been chasing for years. The Stitchers team picks up the detective's leads in an effort to finally bring the suspect to justice, but danger arrives in an unexpected form when Cameron is trapped with the killer. Camille's rebellious older brother Theo arrives in town with a whole lot of trouble. Meanwhile, Cameron is finally honest with Kirsten about his feelings for her.