While Lizzie Borden was the main suspect in the murder of her father and stepmother, several other people were looked at.
- Bridget Sullivan: The Bordens’ live-in maid, she was outside cleaning windows when Abby Borden was believed to have been killed, though she was in her attic room at the time of Andrew Borden’s murder. However, Bridget had no clear motive, and there was no direct evidence linking her with the murders.
- Emma Borden: Lizzie Borden’s older sister, she reportedly shared her concerns about their inheritance. However, on the day of the murders, she was about 15 miles (24 km) away in Fairhaven, visiting friends.
- John Morse: The maternal uncle of Emma and Lizzie Borden, he arrived at the Borden house a day before the murders. The timing of his surprise visit raised questions, though he was visiting relatives when the murders were committed. He also had no clear motive.