Closing Arguments Soon in Marriott Murder Trial

• Lisa Greenwaldt, an investigator for the New Hampshire Public Defender's office, who interviewed McDonough days after Marriott's death.

• Dr. Ira J. Kanfer, a Medical Examiner for the state of Connecticut, who reviewed the case files and discussed asphyxiation and medical issues related to strangulation.

State prosecutor Peter Hinckley questioned Greenwaldt on the interviews with McDonough, including references to a consensual sexual act, which were not recorded in the initial interview.

Defense attorney Joachim Barth asked Greenwaldt whether she had anticipated what McDonough was going to say during that first interview.

"Oh, my God, no," Greenwaldt replied. "I wish I had recorded it. I really do."

Greenwaldt, in another exchange with Barth, testified that McDonough had said that she put duct tape on Marriott. 

The defense has tried to impeach McDonough's credibility based, in part, on her different accounts of what transpired on Oct. 9, 2012. One of those early accounts was that Marriott died during consensual sex, and that McDonough, Marriott and Mazzaglia had been engaged in an act of bondage and sadomasochism.

Kanfer, who said he has conducted more than 4,000 autopsies over 29 years, testified about asphyxia and suffocation. "Oxygen for all of us is like gas for the car," he said.

Kanfer testified that a homicidal ligature strangulation, similar to what McDonough described occurring, is rare.

The forensic pathology reviewed on the witness stand covered the past sworn statements and testimony. The body of Marriott, who was 19 and a freshman student at the University of New Hampshire at the time of her disappearance and death, has not been found.

State vs. Seth Mazzaglia resumes June 24 at 10 a.m.

Related Lizzi Marriott Murder Trial Stories

• Witness to Lizzi Marriott Murder: 'I Did Lie For Him'

• Defense Claims Ex-Girlfriend Killed Lizzi Marriott

• 'Cry Without Tears, Miss McDonough?'

• In Jailhouse Call, Witness Proposes Marrying Accused Murderer

• Mazzaglia Defense Portrays Witness as Compulsive Liar

• Defense for Accused Murderer Tries to Impeach Witness

• McDonough Describes a Heinous Murder and Cover-up

• Witness: Mazzaglia Strangled Marriott with a Rope

• Seth Mazzaglia's Ex-girlfriend says He Killed Lizzi Marriott

• Seth Mazzaglia Murder Trial: Cellmate Says Accused Murderer Plotted Violent Escape

• Marriott Murder Trial: Psychic Sees Dead Body, Testifies on Personas

• Judge Denies Motion for Mistrial in Marriott Murder Trial

• Emotions Raw at Lizzi Marriott Murder Trial

• Prosecutors Portray Mazzaglia as a Scheming, Sexual 'Animal'

• Jurors Examine Lizzi Marriott Crime Scene

• Judge: Murder Suspect Strangled, Suffocated Marriott