The film supposedly took place in the Coastal Carolina region. This is a geographically flat area, called a coastal plain. In the beginning of the film, the kids were driving along ocean cliffs, which are not present in the Carolinas. Obviously, this was filmed in California. See more...
When the kids are on the beach arguing about the urban legend it is this one - http://www.snopes.com/horrors/madmen/hook.htm - that Ray is trying to relate. See more...
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The entry you are marking as a duplicate is:
|Title||I Know What You Did Last Summer|
|Original entry||Portion of the film were shot at an old farm house. The trees were bare, without leaves. Obviously filmed in the winter.|