I love this show and I can name two locations they needto go. First is to Topaz, Utah. It is an old Japanese internment camp in the Utah desert. The history, energy and forgotten souls there need their story told and acknowledged.
Second is an old farm house my family lived in, in eastern Washington. The kids were being possessed, climbing onto the roof, stealing knives, tried to start fires, and I personally got photo evidence of spirits in that house.