Lindsay Clancy’s Shocking Diary Details Surface as She Speaks Out After the Tragic Incident

Lindsay Clancy, the Massachusetts mother and former nurse charged with killing her three young children, addressed the court for the first time Tuesday during the sixth day of her murder trial, as prosecutors presented diary entries detailing her mental state in the months before the deaths.

Massachusetts Superior Court Judge William Sullivan asked Clancy whether she agreed to stipulate certain facts related to DNA evidence. “Yes, your honor,” she replied — her first public statement since proceedings began.

The stipulation means prosecutors won’t need to call several witnesses to establish chain of custody for DNA evidence, though it doesn’t touch the central question before the jury: whether the 35-year-old should be held criminally responsible for her children’s deaths.

Clancy has pleaded not guilty, though her legal team doesn’t dispute that she killed 5-year-old Cora, 3-year-old Dawson, and 8-month-old Callan in January 2023. Her defense instead argues she was experiencing postpartum psychosis and an undiagnosed bipolar disorder that severely impaired her grasp on reality at the time. Her ex-husband, Patrick Clancy, has publicly supported this account, describing her as a wonderful wife and loving mother whose mental health had become severely disturbed.

Diary entries presented to the court trace a deteriorating mental state in the months before the killings. A November 18, 2022 entry read that she was so desperate for a mental break from caregiving that her mind was trying to find something physically wrong with her.

Other entries described crushing guilt over difficulty breastfeeding, acute anxiety about her infant son’s sleep schedule, and persistent brain fog. In one entry, Clancy wrote that she felt unable to make plans and was living moment to moment between naps, along with fear about her son becoming overtired. She also wrote that she wanted help and wanted to get well. Her attorneys argue these writings support their case that she was experiencing a severe psychiatric crisis compounded by insomnia, anxiety, and a complex mix of psychiatric medications.

Patrick Clancy testified as the trial’s first witness last week, describing his former wife’s mental health decline following Callan’s birth. He said she first sought treatment for anxiety in September 2022, was prescribed antidepressants, but continued worsening despite multiple medication changes and psychiatrist switches. He testified she was hospitalized after experiencing suicidal thoughts and intrusive thoughts about harming the children or fearing something terrible would happen to them, and that by December 2022 she had grown increasingly depressed and was losing weight.

Prosecutors maintain Clancy planned the killings deliberately, alleging she asked Patrick to leave the house on errands on January 24, 2023, before strangling all three children with exercise bands in the family’s basement. Patrick’s 911 call after discovering the scene has been part of the case record. Clancy jumped from a second-story window after the killings, surviving but left paralyzed from the waist down; she now appears in court in a wheelchair.

The trial’s outcome will hinge on how the jury weighs the documented mental health decline against the prosecution’s argument of premeditation — a legal distinction between diminished capacity and criminal intent that will likely dominate the remaining proceedings.

This report discusses child death and severe mental health crisis in a factual, legal context. If you or someone you know is experiencing postpartum depression, psychosis, or thoughts of harming yourself or others, reaching out to a mental health professional or crisis line can help.