Attorney says intense pressure to solve a case can often create problems.
The release of a Lynwood police officer, who had been accused of killing one man and injuring two others in a two-state shooting spree, is another blow to a law enforcement agency that's suffered a number setbacks in high-profile cases.
The Will County State's attorney on Wednesday formally dropped charges against Brian Dorian, who they'd accused of being the so-called Honey Bee Killer.
Other botched or stalled cases include the recent dismissal of felony weapons charges against Drew Peterson, who is awaiting trial on charges he killed his third wife, Kathleen Savio. Her March 2004 death was initially ruled accidental but was later determined to be a homicide. Peterson's fourth wife, Stacy Peterson, went missing in October 2007.
In Plainfield, family members still wait for word from Will County investigators on the disappearance of Lisa Stebic, who also vanished in 2007.
And in Tinley Park, authorities still have yet to charge anyone with 2008's shooting in a Lane Bryant store that left five women dead.
But Glasgow has repeated a number of times that he inherited many of these cases and said that any previous mistakes weren't his fault.
Indeed, he recently cleared a father who had been charged with the 2004 rape and murder of 3-year-old Riley Fox. DNA tests revealed that Kevin Fox wasn't the killer, and Glasgow's office in May announced it was charging an imprisoned sex offender with the crime.
"[It's] over-zealousness on the part of their investigators, just because it's a high-publicity case, but they just make things so much worse," said Kathleen Zellner who represented Kevin Fox.
Will County State's Attorney spokesman Chuck Pelkie on Wednesday defended his office and said they always strive to be precise.
"Law enforcement in Will County works hard to serve the interest of justice and to protect the public," he said.
Still, that may be of little solace to Dorian.
"A lot of people, if someone's charged with a crime and even if you're ultimately exonerated, they still believe they're involved," said Zellner.