Killed at the whim of a hat

When crime reporter Jimm Juree is forced to follow her family from Chiang Mai to a fishing village on the Gulf of Siam, she's convinced her career is over. Her journalism will surely dwindle to reports on the annual monsoon-induced floods, for what crimes could possibly happen in such an out-of-the-way place? Answer: plenty. A local palm oil plantation owner and his worker are excavating a well. They dig down six feet and hit metal. It turns out to be the roof of an old Volkswagen combi, which, once unearthed, is found to contain two skeletons - one of them wearing a hat.