When Nica searches "Chucky Doll Evidence" on her computer, it pulls up all of the unsolved murder cases from the previous five films:

Los Angeles Homicide (Seed of Chucky)

Hackensack Homicide (Bride of Chucky)

Niagara Homicide (Bride of Chucky)

Kent Military Homicide (Child's Play 3)

Double Chicago Homicide (Child's Play 2)

Triple Chicago Homicide (Child's Play)