CHICAGO (AP) -- The man who led the investigation into the death of Drew Peterson's third wife is expected to take the stand as testimony at the ex-cop's murder trial enters its sixth day.
Retired Illinois State Police Sgt. Patrick Collins will testify Wednesday as prosecutors attempt to show the investigation he led after Kathleen Savio was found dead in her bathtub in 2004 was botched.
At a hearsay hearing in 2010, Collins said he believed Savio's death was an accident from almost the minute he stepped into her home.
He failed to collect forensic evidence, interview Savio's relatives or secure the suburban Chicago house where her body was found.
Peterson was only charged in Savio's death after his fourth wife, Stacy Peterson, disappeared in 2007. He has denied any wrongdoing.