Why are so many missing persons cases being solved at the bottom of lakes?

[PastTense]

Her death was discussed here:

R.I.P. Fanne Foxe, "The Argentine Firecracker"

Fanne Foxe has died at 84. She was the stripper involved with powerful U.S. Rep. Wilbur D. Mills, whose Tidal Basin affair was instrumental in his political downfall in the '70s. Remember when sex scandals ended political careers? My, how times have changed.