I just finished watching the 3rd season of The Hardy Boys, quite a different style from the first 2 seasons. One thing I noticed is that after season 1, the Hardy boys spent most of their time in in SE like California, Hawaii, New Mexico, as well as other exotic locals like Kenya, Egypt, France, Germany, Romania, Greece, the West Indies, England, Mexico, and the British Hong Kong. I think that House on Possessed Hill is the only episode in Seasons 2 and 3 that takes place near Bayport.