Monster: The Lizzie Borden Story compresses decades of Lizzie Borden's life into an eight-episode drama. Here are six important details viewers may want to know about the real case and Lizzie's later life.
1. Lizzie was acquitted
Lizzie Borden was acquitted in 1893 after being tried for the murders of her father Andrew and stepmother Abby.
2. She lived for decades after the trial
Lizzie continued living in Fall River and later at Maplecroft. Her life after the trial is an important part of the historical record.
3. Emma remained with her for years
Lizzie and Emma lived together long after the trial before their relationship broke down.
4. Nance O'Neil entered her life much later
The real friendship with actress Nance O'Neil began around 1904, more than a decade after the murders and trial. The Netflix timeline moves that relationship much earlier.
5. Bridget Sullivan was not established as Lizzie's accomplice
The historical record does not establish the romantic or murderous partnership portrayed by the series.
6. The case remains unsolved in the legal sense
Lizzie was acquitted and no alternative person was convicted for the murders, leaving the case as one of America's enduring historical mysteries.
Quick answer
The biggest differences concern Lizzie's later life, Emma's support, the timing of Nance O'Neil's friendship and the fictionalized role of Bridget Sullivan.
Source
Fact-check note
This article distinguishes the Netflix dramatization from documented history. Lizzie Borden was acquitted in 1893; claims about guilt, private relationships, motives and events not established by surviving records are described as fictionalized or disputed rather than settled fact.
Netflix Tudum: The True Story · Netflix Tudum: Ending Explained · PEOPLE: Fact vs Fiction · PEOPLE: Emma/Lizzie Fact Check
Related: What Monster Left Out About Lizzie Borden's Real Life: 6 Key Details
Related: Monster: The Lizzie Borden Story Finale Explained — What Ian Brennan Says About the Ending
