Lindsay Clancy trial: Judge declares mistrial in child killings case after jury deadlocks
The defense has blamed one juror for the deadlock.
PLYMOUTH, Mass. -- A judge declared a mistrial in the Lindsay Clancy murder trial on Friday after jurors said they could not reach a unanimous verdict on whether the Massachusetts mother was criminally responsible for killing her three young children.
Watch a special edition of "20/20," "The Trial of Lindsay Clancy," airing Thursday, Sept. 4, at 9/8c on ABC, streaming the next day on Disney+ and Hulu.
The mistrial, on the seventh day of deliberations, leaves the case unresolved. Prosecutors must now decide whether to put Clancy on trial again, drop the charges or try to negotiate a plea deal. The 36-year-old former labor and delivery nurse showed no emotion as the judge announced the mistrial, nor did the jury or her family.
MORE | Lindsay Clancy trial declared a mistrial. What happens next?
The deliberations took a dramatic turn late in the week when Judge William Sullivan said he was going to declare a mistrial Friday before suddenly changing course and giving her defense attorney a chance to appeal to the highest court in Massachusetts. The emergency appeal was quickly denied.
The trial has generated intense interest for more than a month, deeply dividing the public and drawing attention to issues around maternal mental health after childbirth.
Clancy's lawyer, Kevin Reddington, never disputed that she killed the children but says she should not be held criminally responsible because she had postpartum psychosis, a rare mental illness linked to the stress, sleep deprivation and hormonal changes that follow childbirth.
The judge set a date of Sept. 29 to determine next steps.
EDITOR'S NOTE: This story includes discussion of suicide. If you or someone you know needs help, the national suicide and crisis lifeline in the U.S. is available by calling or texting 988.
Prosecutors said Clancy, a former labor and delivery nurse, acted deliberately when she strangled 5-year-old Cora, 3-year-old Dawson and 8-month-old Callan Clancy with exercise bands on Jan. 24, 2023. They said she contrived to get her husband out of the house by sending him to pick up medicine for one of their children and dinner for the family.
Clancy's lawyer, Kevin Reddington, never disputed that she killed the children but says she should not be held criminally responsible because she had postpartum psychosis, a rare mental illness linked to the stress, sleep deprivation and hormonal changes that follow childbirth.
Over 21 days of testimony, jurors heard how Clancy's mental health had collapsed after Callan's birth.
Deeply anxious about a planned return to work, unable to sleep and experiencing what she described as a disturbing brain fog, Clancy sought care from experts in postpregnancy mood disorders, who prescribed multiple psychiatric medications.
Clancy's family members testified that she expressed concern about her mental health decline. Her former mother-in-law, Susan Clancy, described her as a "very nurturing, very loving mother" who was "begging for help."
In early January, she checked herself in to a psychiatric hospital for more intensive treatment, but her stay was short. She killed the children 19 days after she was discharged, leaving their bodies in the basement of the family's home in coastal Duxbury, Massachusetts. Clancy jumped from a second-story window immediately after and remains paralyzed from the waist down.
Prosecutors conceded that Clancy had severe mental illness, but insisted she was able to understand and control her actions. They emphasized that although she claimed to have heard a male voice commanding her to kill the children, she never disclosed hearing voices to her mental health providers before the killings.
In its latter stages, the trial became a battle of medical experts.
Kirk Heilbrun, a forensic psychologist hired by prosecutors to evaluate Clancy, testified that he didn't believe her story about having heard voices. And he said he didn't believe she had acute psychosis when she killed the children, but rather took their lives so they wouldn't "suffer" after she killed herself.
Dr. Phillip Resnick, a forensic psychiatrist who testified for the defense, said that Clancy was "clearly psychotic" and was not in control of her actions.
"It was almost like she was a puppet and someone else was pulling the strings," said Resnick, who spent hours interviewing Clancy after the killings. He said she was also likely experiencing bipolar disorder.
At the start of the trial, Clancy's ex-husband Patrick Clancy described the horror of returning home to find his children. Prosecutors played a seven-minute 911 call in which he could be heard finding the bodies.
In interviews, he has said he has forgiven her and believes her actions were the result of mental illness.
This story includes discussion of suicide. If you or someone you know needs help, the national suicide and crisis lifeline in the U.S. is available by calling or texting 988.
PREVIOUS COVERAGE:
- Psychologist testifies Lindsay Clancy was criminally responsible for killing her 3 children
- Psychologist at Lindsay Clancy's murder trial says she has bipolar disorder
- Lindsay Clancy's defense rests after psychiatrist testimony in case of mother who killed children
- Lindsay Clancy said she was 'so glad' kids were 'safe' after killing them, chaplain testifies
- Lindsay Clancy's former mother-in-law testifies in murder trial: 'She was begging for help
- Mom and sister testify about Lindsay Clancy's declining mental state before she killed her children
- Patrick Clancy, father of slain kids, testifies as ex says postpartum psychosis drove killings
- 'She killed the kids!' 911 call from Lindsay Clancy's husband brings tears to the courtroom
- Jurors in Lindsay Clancy's trial visit the home where she killed her children
- Lindsay Clancy's diary chronicled desperation and 'brain fog' before she killed her 3 kids
- Nanny says Lindsay Clancy appeared to be a loving mother before killing her 3 children
- Toxicology expert testifies that drug levels were low in Clancy trial
- Defense lawyer takes aim at psychiatrist's care before Lindsay Clancy killed her 3 kids
- Investigator says Lindsay Clancy searched 'can you treat a sociopath'
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