Anna Nicole Investigated For Murder Plot To Kill Ex-Husband's Son!

Just when you think nothing more can be revealed on Anna Nicole Smith, we find out she was under investigation by the FBI for a plot to kill her ex-husband's son, E. Pierce Marshall.

The agency ultimately decided there wasn't enough evidence to charge Smith, who had been battling Marshall over control of her ex-husband, J. Howard Marshall's substantial estate, in the murder-for-hire plot.

The AP reports that the Feds were looking into the alleged plot from 2000 to 2001. “Smith adamantly denied ever contemplating such a crime,” an agent wrote in the file, before prosecutors decided to halt the investigation due to lack of evidence.

E. Howard Marshall died in 2006 from an infection at the age of 67; Smith died a year later from an overdose.