15 Years Later, Police Seek New Leads in Lynne Brennan Cold Case

The Manchester Police Department, New Hampshire Cold Case Unit, and New Hampshire Attorney General’s Office seek the public’s help in solving a 15-year-old cold case.

Lynne Brennan had not been seen for about a week before the police were called to check her Manchester residence on 267 North River Road. Once the authorities entered the premises, they found the body of the 53-year-old mother of three. It’s believed that she was killed at some point between October 4 and October 10, 2010; the official cause and manner of death have never been revealed publicly. Brennan lived alone at the time of her murder. Now, as we approach the 15th anniversary of her tragic passing, the New Hampshire Attorney General’s Office and the New Hampshire Cold Case Unit are seeking the public’s help in determining what really happened to Brennan.

To assist in its inquiry, the Attorney General’s Office has released surveillance footage showing the last time Brennan was seen publicly. The footage is from October 4, 2010 around 3:29 p.m.—it shows her purchasing items at Bunny’s Superette on Webster Street in Manchester. In the video, Brennan is wearing her hair pulled back into a ponytail with a white scrunchie, a white long-sleeved sweater, black stretch pants, a large black purse, and light-colored shoes. You can view the video here, or access a written description of the video here if you’re visually impaired.

The hope is that someone may recognize Brennan from the newly released video and help investigators pinpoint who murdered her and why.

Anyone with information is urged to come forward

Senior Assistant Attorney General R. Christopher Knowles, Chief of the New Hampshire Cold Case Unit, said in a statement regarding the plea for information about Lynne Brennan’s cold case homicide, “Fifteen years is a long time for a family to wait for answers. But for our investigators, the passage of time only strengthens our resolve.” He added, “We believe there are people who have information that could be the missing piece in this case. We urge them to come forward.” 

Law enforcement officials are looking to gather details from anyone who may have had contact with Brennan, or who may have seen her, any time between October 4 and October 11, 2010. They’d like to reassure those with pertinent information that any and all tips provided about the case can remain anonymous. If you or someone you know saw or spoke to Brennan, or knows what happened to her, please contact New Hampshire’s Cold Case Unit at 603-271-2663 or coldcaseunit@dos.nh.gov.

Manchester Police Chief Peter A. Marr said, “The Manchester Police Department has not forgotten Lynne Brennan. We are committed to working alongside our partners at the Cold Case Unit to bring justice for Lynne and her family. Any detail, no matter how small it may seem, could be critical.”

Brennan’s sister, Lisa Post, said in a statement, “It has been 15 years since Lynne was murdered. Not knowing who did this to my sister weighs heavily on our whole family. We need answers, and we need peace.” Post previously spoke with News 9 in 2018 and said that, “it’s unbearable sometimes and you know as the years go by you try to find ways to cope and live with it, but it’s always there, ever present.” 

She, along with other members of Brennan’s family, spoke about how Brennan was a good, “generous person who believed in putting the needs of others, especially her children, before her own.” They added that the 53-year-old “had an infectious enthusiasm for life and a passion for music and art that inspired those around her.” The family reiterated how deeply they miss her, and how difficult it has been to go without these crucial answers for nearly 15 years.


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