IMO we have only seen about 5% of what LE has.
Gabby was reported missing on the 11th. Brian was last seen alive on the 13th. The Laundries reported Brian missing on the 17th. That seems like a natural turn of events IMO, if you can call anything so macabre natural?
However, once Brian was reported missing, the world thought he might be on the Appalachian Trail, or in Mexico, or hiding in a fishing boat off the FL coast, but not LE. They just kept dredging that swamp. Also strange is the short break they took for a day to search the Laundries' house. Afterward, they returned to the Carlton Reserve and stayed there for weeks, cadaver dogs and all. Some piece of info we don't know about made LE spend money and time turning that park inside out. Who knows what it actually was, but it could have been a suicide note.