A “warfare of consultants”: Revisiting the notorious Nineteenth-century Flores Avenue poisonings

On January 2, 1890, a Portuguese man named Jose Antonio Sampaio Jr. died in horrible agony whereas staying on the Grand Lodge de Paris in Porto, Portugal. The son of a rich and extremely revered linen service provider, Sampaio Jr. confirmed indicators of poisoning in his remaining hours, together with blood in his vomit. He was attended by his brother-in-law, a doctor named Vicente Urbino de Freitas.

Sampaio Jr. was nonetheless buried with out incident, and the household might need grieved their loss and moved on. However in late March, Sampaio Jr.’s son and two nieces out of the blue turned ailing after consuming almonds with liquor and coconut and chocolate truffles, which had arrived on the Sampaio home on Flores Avenue through a mysterious bundle. The youngsters’s uncle, the aforementioned de Freitas, prescribed lemon balm enemas. Whereas the women recovered, 12-year-old Mario Guilherme Augusto de Sampaio died in spasms and convulsions on April 2.

As soon as once more, the signs had been in step with poisoning, and suspicion quickly fell on de Freitas. He was arrested, tried, and convicted in 1893, though he maintained his innocence for the remainder of his life. This was the notorious “Crime of Flores Avenue,” and it made headlines world wide. The case continues to fascinate Ricardo Jorge Dinis-Oliveira, a forensic toxicologist on the College of Porto, greater than 130 years later, as a result of it gave start to forensic toxicology research in Portugal and nonetheless informs present-day Portuguese medico-legal procedures. It is also one hell of a narrative: “It is going to actually make a great film,” Dinis-Oliveira wrote.

Dinis-Oliveira has spent the final 14 years poring over historic works, trial transcripts, and newspaper accounts from everywhere in the world, even interviewing dwelling family of the principle characters. He compiled his findings into three separate papers. The primary, revealed in 2018, retold the fundamental info of the case. The second, revealed in 2019, analyzed all of the related and contradictory testimonial proof from the trial. Dinis-Oliveira then reviewed the contradictory toxicological proof in a 3rd paper revealed in Could 2021 in Forensic Sciences Analysis, defending the skilled reputations of his Nineteenth-century compatriots.

Two mysterious deaths

Born on Flores Avenue in Porto in 1849, de Freitas married Maria das Dores Basto Sampaio in 1877, the identical 12 months he turned a lecturer on the Medical-Surgical Faculty of Porto. He gained skilled distinction through the years with notable research in dermatology, significantly the therapy of leprosy and syphilis. Maybe de Freitas hoped to someday inherit his in-laws’ appreciable wealth. Standing in his manner had been the couple’s three kids—an eldest son, Guilherme, who died younger; a daughter; and the aforementioned Sampaio Jr.—in addition to the three grandchildren.

Sampaio Jr.’s spouse died younger, leaving him with two small daughters. The women lived with their grandparents whereas their father turned one thing of an itinerant bohemian, a lot to his father’s disapproval. He took up with an Englishwoman named Lothie Karter, whom he had met at a nightclub in Lisbon. Sampaio Jr. usually complained of abdomen and liver illnesses. He acquired a mysterious bundle in October 1898 whereas nonetheless in Lisbon, containing vials purportedly holding medicines to deal with these illnesses. Not recognizing the sender, Sampaio Jr. didn’t take the cures, telling Karter he suspected it was prussic acid (a robust poison).

In December 1889, Sampaio Jr. and Karter returned to Porto and moved into the Grand Lodge de Paris. On December 28, Sampaio Jr. had lunch with de Freitas and have become ailing the next day. Whereas he initially assumed it was a chilly, his situation worsened, and de Freitas was referred to as in to seek the advice of. De Freitas gave his brother-in-law a shot of what he stated was pilocarpine (now a standard therapy for glaucoma).

Sampaio Jr. quickly turned delirious, sweating and shaking, with fever, lack of imaginative and prescient, and vomiting, amongst different signs. Nonetheless, de Freitas insisted on giving him a second injection. As Sampaio Jr. continued to worsen, de Freitas prescribed one final injection of pilocarpine on the afternoon of January 2, mixing the tincture himself together with his again to others within the room. He requested one other physician to manage the shot.

The injection web site quickly developed a nasty black spot. Sampaio Jr. started vomiting violently and eventually died round 6 pm. Earlier than he did so, he advised Karter that he was satisfied it was the pictures of pilocarpine that had sickened him. De Freitas insisted on disposing of the vomit. When the hotelier expressed remorse that the person had died so younger, de Freitas allegedly advised him that his brother-in-law had been “a madman, a scoundrel, who shamed the household,” including, “Did not you discover the proof of psychological sickness? His entire household is like this. All of them die by the identical manner.”