Haley Brooks

Haley Brooks (previously Haley Hotchner) is the ex-wife of series regular Aaron Hotchner. Together they have a son named Jack. Their marital issues are a running theme and by the end of episode 3x02 ("In Name and Blood", also entitled "In Birth and Death") it looks as though Haley and Jack have left. At the end of episode 3x03 ("Scared to Death") Hotch mentions to Morgan that he isn't sure if Haley is coming back. At the end of episode 3x11 ("Birthright") Haley has Hotch served with divorce papers as he is leaving the office for the day. Haley has since returned to using her maiden name, Brooks.

Season Five
In the Season Five premiere, Faceless, Nameless, Haley and Jack are suspected to be potential targets of George Foyet. After Hotch is found at a local hospital, the team races to find Haley and Jack. Haley is found folding clothes in her bedroom, and Jack is spending time at a friend's house on a "play date". Haley is taken to safety, and Morgan offers to pick up Jack. When the two are safe, they are taken to Hotch's hospital room. Hotch tells Jack that he loves him and that they will have to go away for awhile. He tells Haley that he will spend the rest of life making it up to her, and once Foyet is caught, they can return home. They are later placed in the protective custody of U.S. Marshall Sam Kessmeyer.

In the episode "100" Haley is attacked by the Reaper and is told by Hotch to be brave. She is brave even though she knows she will be killed. She is talking with Hotch on the phone as a gun is pressed to the back of her head. A gunshot is heard echoing through the phones as Hotch is on one line and the team is on another.

Hotch comes into the house to find Haley dead. It is unclear if Hotch will continue to work at the BAU now that he has to raise his son, Jack.