Nearly one year after the sudden and mysterious death of New York fashion designer Martha Nolan-O’Slatarra, the case has taken a dramatic new turn.

Her family has announced plans to file a $50 million wrongful death lawsuit, alleging that the owner of the yacht where she was last seen bears responsibility for the events leading to her death. The claims introduce new allegations that differ sharply from the initial direction of the investigation and are likely to intensify scrutiny of a case that has remained unresolved for months.

Importantly, these are civil allegations made by the family in planned court filings. The investigation remains ongoing, and no court has determined liability or criminal responsibility.

A Lawsuit Filed on the Anniversary of a Tragedy

According to court filings, the wrongful death lawsuit is expected to be filed in Manhattan civil court almost exactly one year after Nolan-O’Slatarra died aboard a yacht docked at an exclusive Montauk yacht club.

The complaint reportedly seeks $50 million in damages and alleges that businessman and investor Christopher Durnan caused the designer’s death through ᴀssault, negligence, and gross negligence.

The filing further alleges that the combination of those actions ultimately resulted in her death.

At this stage, these allegations remain claims made by the plaintiff’s family and have not been proven in court.

A Case That Has Sparked Questions From the Beginning

When Martha Nolan-O’Slatarra died on August 5, 2025, authorities initially indicated they believed the death may have resulted from an accidental drug overdose.

However, according to individuals close to the family, an independently commissioned autopsy reportedly reached different conclusions.

Those sources say only trace amounts of cocaine were allegedly detected and claim the independent medical examination suggested that physical trauma or an ᴀssault may have contributed to her death.

The official investigation remains open, and authorities have not publicly confirmed those findings.

A Business Meeting That Ended in Tragedy

Originally from Ireland, the 33-year-old designer had spent nearly a decade building a life and career in New York City.

Known for her luxury swimwear brand East x East, she had been working to establish herself within the compeтιтive Hamptons fashion scene.

Christopher Durnan had invested in the company and reportedly owned approximately 13 percent of the business.

According to published reports, Nolan-O’Slatarra boarded Durnan’s yacht, Ripple, on the evening of August 4, 2025, for what was described as a business meeting.

That meeting would become the last known encounter before her death.

Friends Grew Increasingly Concerned

As the evening progressed, Nolan-O’Slatarra stopped responding to messages from friends and her boyfriend.

Concern reportedly grew as hours pᴀssed without contact.

One message later cited in media reports chillingly read:

“I’m sure her phone died. Or maybe she’s ᴅᴇᴀᴅ.”

Shortly afterward, Nolan-O’Slatarra reportedly replied that she was still at the yacht club.

Roughly an hour later, emergency responders were called.

Disturbing Scenes Reported at the Marina

Residents near the yacht club reportedly told investigators they heard screams coming from the dock area late that night.

According to witness accounts reported by multiple news outlets, boaters responding to the commotion encountered a man identified as Christopher Durnan who was allegedly unclothed and attempting to attract attention by throwing sunscreen bottles toward nearby boats while shouting for help.

Witnesses later said they rushed to ᴀssist after realizing a woman aboard the yacht was unconscious.

Despite efforts by bystanders and first responders to revive her, Nolan-O’Slatarra was pronounced ᴅᴇᴀᴅ.

Exactly what occurred during the final moments before emergency crews arrived remains one of the central unanswered questions in the investigation.

Family Says They Want Answers

For nearly a year, Nolan-O’Slatarra’s family has continued seeking additional information regarding the circumstances surrounding her death.

According to reports, requests for investigative records, including autopsy-related documents, have been denied while authorities continue their investigation.

Officials have stated that the case remains open.

The newly announced civil lawsuit signals that the family intends to pursue its own legal effort to establish accountability, independent of any potential criminal investigation.

An Investor Now Facing Serious Allegations

Christopher Durnan has not been found liable in connection with Nolan-O’Slatarra’s death, and the allegations outlined in the planned lawsuit have yet to be tested in court.

As civil proceedings begin, both sides are expected to present evidence supporting their respective positions.

The outcome could provide new insight into one of the Hamptons’ most talked-about unexplained deaths.

An Investigation That Continues

Nearly twelve months later, many of the most important questions remain unanswered.

What happened aboard the yacht that night?

Why do the family’s allegations differ so sharply from the initial investigative theory?

Will the forthcoming lawsuit reveal evidence that has not yet been made public?

For now, those questions remain unresolved.

As both the civil case and the official investigation move forward, many will be watching closely to see whether the next chapter finally brings greater clarity to the mysterious death of Martha Nolan-O’Slatarra.

Source: New York Post