The team investigate the murder of an ex-Air Force officer, and the trail leads to a former co-worker and renowned UFO expert. The memories in the stitch have the team wondering if UFOs and extraterrestrial beings really exist.
When Kirsten wakes up to find that everyone in the stitch lab is missing except Cameron, the two search everywhere but only find a series of mysterious clues; and Kirsten is forced to confront her own emotions about her relationship with Cameron.
After an engineer ends up dead, his colleague and work-rival becomes a suspect. However, upon examining some stitches, Kirsten and the team uncover that he was a part of an underground-gaming club. The team race to save a falling satellite, while Cameron takes a walk on the wild side when he infiltrates the gaming ring to get close to another suspect.
When an MI6 agent is found dead, Kirsten struggles to sort through his memories due to the visual codes that the spy used to keep secrets. Meanwhile, Linus and Camille go on a double date, but not with each other.
A high-profile divorce attorney is murdered, and the team must sort through a plethora of suspects. Meanwhile, Linus discovers the cause of the neurosync issues in the stitches, which directly affects Kirsten and Cameron.
The team investigate the case of a young woman found dead in her wealthy boyfriend's pool. Meanwhile, Linus feels a connection to Ivy; Cameron's concerned about Kirsten's emotional vulnerability; and Camille is intrigued by an attractive medical examiner who likes to meet in unusual places.
In the Season 3 premiere, Kirsten's life lays in the balance as the team work to bounce her back into the real world, after she became trapped in a stitch in her attempt to find her mother; and Cameron finds a way to bring her back to reality, but it could cost them their relationship.