The family, friends, co-workers, acquaintances would know if that parent had kid or not. All it would take is one person seeing a parent talking about their murdered child and that person watching to know it was BS and start talking about.it. If they were in on it, it would be very difficult to track down every person the actors came in contact with.

What about all the cops that were at the school, were they actors too? There were about 80 cops from various police dept,'s that would be a lot of family and friends to keep quiet.

The family, friends, co-workers, acquaintances would know if that parent had kid or not. All it would take is one person seeing a parent talking about their murdered child and that person watching to know it was BS and start talking about.it. If they were in on it, it would be very difficult to track down every person the actors came in contact with.