Music instructor Joseph Horner accused of killing Victoria Castle

New York Music Teacher Charged with Murdering Sister-in-Law

A music teacher from New York has been charged with the murder of his sister-in-law, a 25-year-old doctor. Authorities allege that the suspect, Joseph Horner, age 27, may have harbored an obsession for over a decade.

Horner faces second-degree murder charges related to the death of Victoria Castle, a doctoral student at Stony Brook University. Police found Castle unresponsive in a North Massapequa home on June 29. A felony complaint filed in Nassau District Court claims Horner intentionally caused her death, though the complaint lacks specific details about the incident.

During Horner’s arraignment, prosecutors stated that he had been “obsessed” with Castle. They also alleged that he lured her while his wife was away and, after asking Castle to help with a piano move, strangled and sexually assaulted her. Following the attack, he allegedly called 911, waited for police, and confessed to the crime.

Police arrived at the home around 8:44 a.m. to find Castle unconscious. She was later pronounced dead at a hospital. Horner was arrested at the scene and charged subsequently. He is scheduled to appear again in court in Mineola on Thursday.

Castle was reportedly pursuing her Ph.D. and worked as a research assistant at Stony Brook. Just a couple of years before her tragic death, she shared a heartfelt tribute on social media celebrating her sister’s marriage to Horner, expressing love for the couple.

In light of the situation, Horner, who teaches music in the Oceanside School District, has been placed on administrative leave. According to the district, the allegations are not connected to his position or any student interactions. The district emphasized its dedication to maintaining a safe environment for its community.

Horner’s attorney acknowledged the gravity of the allegations but urged everyone to avoid rushing to conclusions, pointing out the disparity between the charges and Horner’s positive reputation as a teacher. The case continues to evolve, and if found guilty of second-degree murder, he could face a sentence ranging from 25 years to life.