Three boys and 10 minutes to suffocate all of them. Place them in a trunk in the parent's drive way and not be observed?
Competent police work in Camden? I think this may be a drug related revenge case or some loose screws involving one of the adults in the family(s) concerned. NSNR
The car was surrounded by shrubs and in the back yard, so someone could have loaded the dead children in the trunk after dark. If the father got a phone call from the killer/drug dealer, I wonder if he'll tell the cops.