Drew Peterson is quite the self-assured piece of work.

The Illinois man charged with killing his third wife, Kathleen Savio, and whose fourth wife mysteriously disappeared, told "The Today Show" he believes he’ll be cleared of the charges.

In a phone interview from the Will County Jail in Joliet, IL, Peterson told Matt Lauer that he’ll "probably be found innocent" of the 2004 murder of Savio, and he blasted the grand jury that indicted him.

Savio was found dead in her dry bathtub shortly after she and Peterson divorced. Although the death was first ruled an accidental drowning, officials exhumed her body and later declared it murder. Peterson and Savio had two children, while Drew and fourth wife Stacy Peterson also had two. Stacy has been missing since October 2007; her family claims Drew killed her, but he insists she ran off with another man. 

In yet another twist in the case, The Chicago Tribune reports that six days before Savio’s body was found, Drew Peterson’s lawyer prepared papers telling his client he had been subpoenaed and was to be deposed in their divorce fight. Peterson could have lost hundreds of thousands of dollars from the sale of their home and his bar, and Savio was seeking half of her ex-hubby’s police pension. But with Savio dead, Peterson got everything, including the couple’s children.

"I’m sure that’s what Peterson feared — mostly that she was going to take everything from him," Sue Doman, Savio’s sister, told the Tribune.

Listen to Lauer’s interview with Peterson below: