The case that began with poisoned sweets in Bogotá resurfaced this week in the cold, gray waters of the River Thames.

Zulma Guzman Castro, the woman accused of killing two teenage girls with chocolate-covered raspberries laced with thallium, was pulled alive from the river near Battersea Bridge in London, according to multiple U.K. reports.

Emergency services were called shortly before 7 a.m. Tuesday after a woman was spotted in distress on the bridge. The Metropolitan Police Marine Policing Unit recovered Castro from the water at 7:14 a.m. and transported her to a hospital, where authorities later said her injuries were not life-threatening.

Castro is the primary suspect in the deaths of two girls in Bogotá who died in April after allegedly eating raspberries contaminated with thallium — a colorless, odorless heavy metal once infamously known as “the poisoner’s poison.” The victims, identified as 14-year-old Ines de Bedout and 13-year-old Emilia Forero, fell violently ill after a delivery of chocolate-coated fruit arrived on April 3. Both were dead within four days.

According to Colombian investigators, the poison was not meant for the girls.

Authorities believe Castro intended to kill her former lover, Juan de Bedout — Ines’s father — in an alleged act of vengeance after their relationship collapsed. Instead, prosecutors say, the deadly gift reached children first. A third girl reportedly survived but suffered life-changing injuries, and a 21-year-old brother of one victim was also hospitalized.

Castro has denied responsibility.

After the deaths, she vanished.

Investigators say she fled Colombia on April 13, moving through Argentina, Brazil, and Spain before arriving in the United Kingdom in November. Interpol issued a red notice for her arrest, though it was later rescinded under circumstances that remain unclear. Colombian authorities had recently renewed efforts to detain her, and U.K. courts reportedly issued an arrest warrant earlier this week.

Then came the river.

British officials have confirmed that Castro cannot be formally arrested until she is discharged from hospital, a requirement under U.K. law. Colombian diplomats say they are monitoring the situation closely as extradition questions loom.

For the families left behind, the story never moved on.

Pedro Forero, Emilia’s father, has publicly mourned the daughter he lost, writing that no love in his life would ever equal the one he had for her. “I cry for the stories we won’t be able to live,” he wrote. “You were and will be the cutest thing I had in my life.”

Two children are dead. Another life is scarred. And the woman accused of setting it all in motion surfaced not in handcuffs, but gasping from a river thousands of miles away.

The poison traveled farther than anyone imagined.