Toyin Moses

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 to 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.

The entire squad is on high alert when a massive blackout hits Brooklyn. Later at the hospital, Jake and Amy are happy to introduce their friends to their newborn son, McClane 'Mac' Peralta.

Seemingly innocuous comments Lyle previously made come back to haunt him and Attorney Leslie Abramson makes a move to represent the brothers.