Big Sea (S06E23)

When an offshore derrick working to reclaim beach sand from the ocean floor uncovers the body disposal site of an UnSub, the BAU travels to Jacksonville in order to find the killer. As the families of missing persons from up and down the east coast show up to see if their loved ones are among the remains, our team must identify the UnSub from among the thousands of boat owners in northern Florida. (CBS TV Network)