In " False Flag " , Lewis becomes upset after the Unsub , Melissa Miller ( Zelda Williams ) , tells her that she believes the Sandy Hook Elementary School shooting was staged . Lewis then reveals to the team that she was present at Sandy Hook on the day of the school shooting . She tells the team that she provided counseling to the parents of the shooter 's victims and that she also saw the victims ' bodies , which severely traumatized her
Sandy Hook Elementary School shooting
Sandy Hook Elementary School shooting
Tara Lewis (Criminal Minds)