Antonio Leon

Kirsten's unemployed sister, Hailey, moves in with the Cohens and disrupts the entire family when she behaves like the houseguest from Hell. Hailey eats her way through the refrigerator, controls the television, is disrespectful Kirsten and shows no signs of leaving . Desperate for some time alone with his wife, Sandy urges Kirsten to resolve the problem with her sister.

When Reid fears his mother has been abducted, he asks the BAU to investigate while he's stuck in prison.

The BAU looks into the cause of several fatal car crashes involving drivers and pedestrians; Reid gets bad news.

The team investigate the death of a former marine killed during a drone strike on a terrorist target in the Middle East. Evidence soon leads them to a private security firm.

The story of Melinda's transformation is revealed; Skye learns more about her heritage -- and the truth sends her in a new direction.

Grissom and his team investigate a five-year-old's death by starvation, while Catherine and her team try to find out who killed a prisoner in a holding-cell brawl.