Weinberg filed a limited appearance in Plymouth Superior Court on Tuesday, September 15, to work on a planned motion arguing that double jeopardy prevents the case from going forward. Lindsay Clancy has added Boston defense attorney Martin G. Weinberg to her legal team as she tries to stop a second trial over the deaths of her three children.
Weinberg is now taking on a similar legal issue for Clancy, although the facts and legal questions in the two cases are different. He argued before the Massachusetts Supreme Judicial Court in 2024 that some charges against Read should be dismissed after her first trial ended in a mistrial. That effort was unsuccessful, but Read was later acquitted of the murder charge at her second trial in 2025.
Weinberg is a well-known Boston defense lawyer who previously represented Karen Read during her legal fight over the death of Boston police officer John O’Keefe.
Her first trial ended without a verdict after seven days of jury discussions. The lone holdout prevented a unanimous decision, leading Judge William Sullivan to declare a mistrial. Weinberg has now been brought in specifically to handle that argument and any appeal that follows.
Clancy was charged with killing her three children , Cora, 5, Dawson, 3, and Callan, 8 months, at their Duxbury home in January 2023. Several jurors later said the panel was split 11-1, with 11 jurors supporting a finding that Clancy was not criminally responsible. Because she was suffering from postpartum psychosis, she admitted killing the children, but her defense argued that she was not criminally responsible.
Reddington had already said he would seek dismissal, arguing that there was no legal need for the mistrial and that a second trial could violate Clancy’s constitutional protection against double jeopardy.
Clancy’s first trial ended in a mistrial on September 4 after jurors could not reach a unanimous decision. Her next court hearing is set for September 29, when the judge is expected to consider the defense motions and the next steps in the case.
