A dangerous new drug has claimed the life of a young woman and, while the Stitchers team is looking for its source, they run into Detective Fisher, who is on the same trail.

When a murky stitch doesn’t give enough evidence against a newlywed husband accused of killing his wife, Kirsten attempts to prove her strong feelings about his guilt. This effect on Kirsten makes Cameron worry that she will end up like Marta. Meanwhile, Linus and Camille get to know each other better.

When Cameron’s neighbor is killed, the Stitchers group works to determine if the bullet was really meant for Cameron. As they stakeout the location Kirsten finds that she enjoys the reconnaissance, maybe a little too much. Meanwhile, Cameron shares more details with Kirsten about Marta’s disastrous stitch.

When the algorithm for the Stitchers program turns up among thousands of classified documents hidden by a conspiracy theorist, Kirsten starts to suspect her colleagues. Meanwhile, Kirsten starts getting cryptic messages from an unexpected source.