SEATTLE -- A prominent local attorney is crying foul in the case of the University of Washington student accused in the murder of her British roommate in Perugia, Italy.

Amanda Knox, her former Italian boyfriend, Raffaele Sollecito, and a third suspect, Rudy Hermann Guede of the Ivory Coast, are suspected in the 2007 stabbing death of Meredith Kercher.

Anne Bremner, trial attorney for Stafford Frey Cooper, says video taken at the crime scene shows investigators making gross mistakes which she refers to as "Fellini-type forensics."

"Instead of making impressions of bloody footprints, shoe prints, the investigators actually scrub them and clean them up, and destroy the evidence," she said.

Bremner, who is also a nationally-recognized legal analyst, said the footage shows investigators making a series of mistakes that effectively destroying the integrity of the crime scene and the evidence.

"They try to break through a door and crash through a window and the door by mistake.

"There's a piece of evidence that kind of seems to jump around the crime scene at different times and turns from the color white to almost charcoal gray to black during the course of this.

"There are times when they'll pick up a hair and just throw it aside.

"And the photography of the scene is like a project you might see in high school. It kind of jumps around, the camera, with no protocol followed, with no rhyme, no reason depicted," she said.

Bremner said the Italian authorities' mishandling of the investigation goes beyond the crime scene. Knox, who was never charged in the case, has spent nearly a year in Italian prison. This, Bremner said, is simply unacceptable.

"There's no evidence to link her to the homicide at all and she's been maligned in the British tabloids and elsewhere through false leaks about evidence and characterizations of her as Foxy Knoxy and the Evil Angel from Seattle.

"I've looked at a lot in this case and I hearken back to the phrase 'injustice anywhere is injustice everywhere.' And this case, it's very compelling in terms of her innocence," she said.

Knox has maintained she was not at the house she shared with Kercher on Nov. 1, the night of the murder.

"She was over at Raffaele's house, and she happened to be the one who was there in the morning and found the situation," said her father, Curt Knox.

Knox told police she arrived home in the morning to find the front door ajar. She went inside through the common area and down the hall to her room, which is next to Kercher's. Her roommate's door was closed, she said.

She said she took a shower and when she stepped out, she noticed blood spatters in the bathroom. She called her mom in Seattle and told her she was worried, then went to fetch Sollecito. Together they called police.

But soon police switched the focus of their investigation to Amanda herself. The prosecutor pointed to the conflicting statements she gave during her interrogation, which was conducted throughout the night with no interpreter and no attorney present.

"They (the interrogators) told her they knew Patrick was involved, that she was involved, she was going to go to jail for the rest of her life, she would never see her parents again. There was some physical abuse," said her mother, Edda Mellas. "She was hit in the back of the head."

Knox, Sollecito and Guede had all denied wrongdoing. A hearing to determine whether the three will stand trial began last month. They are closed to the media and the public.

Knox is currently the subject of three civil suits, one of which was filed by the Kercher family for the death of Meredith Kercher.

Diya "Patrick" Lumumba, a former suspect to whom Knox had pointed, is also suing Knox for defamation based on statements that led police to believe he was a suspect.

The owner of the house Knox and Kercher had rented has filed the third suit as he has had trouble re-renting his property following the murder.

Recent coverage:

Italy: Amanda Knox and ex-boyfriend in court

Knox's life inside Italian prison

Judge allows 3 civil suits against Knox to proceed

Knox's family: Stolen letters, lies and distortion mucking up case

Family of slain British student hopes for justice

Knox's mother: 'Her story has never changed'