Drew Peterson Trial Focuses on Botched Investigation

Prosecutors sought to explain why there is no physical evidence linking the former police officer to her death.

FILE - In this May 8, 2009 file photo, former Bolingbrook, Ill., police officer Drew Peterson leaves the Will County Courthouse in Joliet, Ill., after his arraignment on charges of first-degree murder in the 2004 death of his third wife Kathleen Savio. On Tuesday, Aug. 7, 2012, prosecutors resume their case against Peterson in the second week of his trial. They got off to a rocky start, enduring frequent tongue-lashings from the judge over testimony that he has deemed inadmissable. (AP Photo/M. Spencer Green, File)

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