Daughter of US serial killer, Michael 'Bear' Carson, wants to give her DNA to gardaí to help solve Irish murders.
Michael, AKA the 'San Fransico Witch Killer', murdered three people with his wife Suzan.
Speaking to Dave Fanning on RTÉ 1's Ryan Tubridy show, Jenn Carson said there were four murders that overlap with the time her father spent in Ireland in 1978 and 1979.
‘I don’t think I can solve these cold cases, but I have offered to give my DNA to any cold cases.
‘I know that you have four cold cases in Ireland within the time period and one of them is a little bit similar to the modus operandi, so I would be glad to give my DNA to your police in Ireland or other European or US forces during the 1978 to 1983 period’.
The pair are suspects in dozens of murders in the US and Europe in the last '70s and early '80s.
Jenn, who now works as an advocate for children of prisoners, spoke about how her father was a "caring, hippie dad" but things changed after he met Suzan.
"There was the obsessive relationship between the two, there was extremist beliefs and there was the dropping of acid, not experimentally but every day they were using LSD which I think caused some brain damage." [sic]
"I truly believe both people had psychopathic tendencies where they did not feel empathy and they did not feel remorse."
The Carson's had written a manifesto called Cry For War, calling for all witches to be killed as well President Ronald Reagan.
They were apprehended in 1983 and sentenced to 75 years to life.
Her father, Jenn said, has never shown any remorse.
"I went to see him as a young adult to say goodbye and confront him. There was absolutely no remorse."
"My father was not in there any more, it was a different person and I walked away."