During the search , Prentiss realizes Hotch is missing .
The team eventually discover that the Reaper ( C. Thomas Howell ) has attacked Hotch and also taken personal information regarding Haley ( Meredith Monroe ) and Jack 's ( Cade Owens ) whereabouts .
During the search , Prentiss realizes Hotch is missing and the team eventually discover that the Reaper ( C. Thomas Howell ) has attacked Hotch and also taken personal information regarding Haley ( Meredith Monroe ) and Jack 's ( Cade Owens ) whereabouts .