Riddle House Murders. The victim took their pill with water and died. Knew at once that this was a wizards murder.
Hepzibah Smith - poisoned which Tom blamed on her house-elf Hokey by implanting a false memory in Hokey. Voldemort entrusted his diary to Lucius Malfoy who later seized the opportunity to smuggle it back into Hogwarts. Hepzibah Smith died two days after that little scene said Dumbledore resuming his seat and indicating that Harry should do the same.
The victim took their pill with water and died.
The Riddle House was a manor house in Little Hangleton that was home to Thomas Mary and Tom Riddle Senior Lord Voldemorts paternal family. The victim took their pill with water and died. After opening the Chamber of Secrets he used the Basilisk to kill Myrtle Warren providing the murder necessary to craft a Horcrux. Hepzibah Smith - poisoned which Tom blamed on her house-elf Hokey by implanting a false memory in Hokey.