A friend of Drew Peterson says she decided to wear a wire to tape conversations with the former police sergeant because of the way he acted after his fourth wife went missing last October. Paula Stark told "Good Morning America" Thursday that she her husband have proof they taped conversations with Peterson and she doesn't doubt he's somehow involved in Stacy Peterson's disappearance -- as well as the death of his third wife, Kathleen Savio.
Stark says Illinois State Police told her "it was fine" for the couple to tell media about the taped conversations.
She also says she's worried about Peterson's four children, the older two of which have been called to testify before a grand jury investigating both Stacy Peterson's and Savio's cases.
Peterson and his attorney both dismiss Stark's claims and say even if there are tapes, they are confident Peterson's said nothing incriminating.