Mazzaglia convicted of murdering N.H. student Jury deliberates 8 hours in monthlong trial that described domination, lurid sex details ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page Seth Mazzaglia was sentenced to life imprisonment without chance of parole for strangling and raping Elizabeth ‘‘Lizzi’’ Marriott. Left: NECN screen capture; Right: AP The mother of Elizabeth “Lizzi” Marriott spoke at the sentencing for Seth Mazzaglia (left). Jim Cole/AP Bob Marriott held up a photo of his daughter during the hearing. Jim Cole/AP Marriott's uncle, Tony Hanna, looked at Seth Mazzaglia as he spoke. Jim Cole/AP Marriott's aunt, Becky Hanna, gave a victim impact statement. NECN screen capture Mazzaglia and his attorneys stood during his sentencing. Jim Cole/AP Seth Mazzaglia looked back at his mother as he was escorted out of the court after his sentencing. David Lane/Union Leader/Associated press Mazzaglia, 31, was sentenced to life imprisonment without chance of parole. David Lane/Union Leader/Associated press Houran instructed the jury before they deliberated. Jim Cole/Associated Press State prosecutor Geoffrey Ward showed jurors the black gloves they say Mazzaglia used when he strangled Elizabeth "Lizzi" Marriott. Jim Cole/Associated Press The judge listened as defense attorney Joachim Barth delivered his closing arguments. Jim Cole/Pool/AP McDonough, the state’s key witness and Mazzaglia’s ex-girlfriend, broke down during her testimony. AP/File McDonough had lured Marriott (pictured), her co-worker, to the apartment with the promise of watching a movie or playing a video game. Jim Cole/Pool/AP Mazzaglia, 31, is charged with killing Elizabeth “Lizzi” Marriott at his Dover apartment on Oct. 9, 2012. Jim Cole/Pool/AP McDonough, 20, is serving a 1½ - to 3-year sentence for conspiracy and hindering prosecution. AP Photo/The Herald/Rich Beauchesne/Pool Mazzaglia’s lawyers have said that McDonough killed Marriott during rough sex. AP Photo/The Herald/Rich Beauchesne/Pool Mazzaglia’s defense lawyer has told jurors that McDonough concocted her story to get out of a long prison sentence. AP/Foster's Daily Democrat/.John Huff/Pool Defense attorney Joachim Barth questioned Kathryn McDonough during her former boyfriend Seth Mazzaglia's first-degree murder trial. AP/Foster's Daily Democrat/John Huff/POOL Ryan Bachman testified that former cellmate Seth Mazzaglia had elaborate plans to escape jail and hire someone to hurt or kill two witnesses in his case. AP/Foster's Daily Democrat/John Huff/POOL Prosecutor Peter Hinckley pointed to a letter written by Mazzaglia to McDonough where he used the code name “Murphy Castle” for his former prison cellmate Ryan Bachman. AP/Foster's Daily Democrat/John Huff/POOL Mazzaglia allegedly created an elaborate plan to kill Roberta Gerkin (pictured) and Paul Hickok, two friends who were called to Mazzaglia’s apartment after Marriott was killed. Jim Cole/AP Brittany Atwood testified about her relationship with her girlfriend Elizabeth Marriott during the trial. Jim Cole/AP Diane Rebecca Hanna wept as she looked at evidence from her niece, Elizabeth Marriott, while on the witness stand. Rich BeauchesneP/Foster's Daily Democrat/John Huff/POOL Detective Sean Mask, of the Dover, N.H., police, was the first witness to be called in the trial. AP/Portsmouth Herald/Rich Beauchesne/Pool Seth Mazzaglia stood in court during a break in opening arguments at the start of the trial.