This is a possible concise summary:
The video is about Mary Ann Cotton, a serial killer who poisoned her husbands, children and others with arsenic in 19th century England. She used her beauty, charm and nursing skills to deceive people and escape suspicion for a long time. She was eventually caught and hanged for her crimes. The video is based on a book called Lady Killers, which the narrator recommends. The narrator also asks for likes, shares and subscriptions, and promotes her secondary channel and discord group.
Here are the key facts extracted from the text:
1. The text is a transcript of a video about Mary Ann Cotton, a serial killer in England in the 19th century.
2. Mary Ann Cotton killed several of her husbands, children, and relatives by poisoning them with arsenic, often to collect insurance money or to pursue new relationships.
3. Mary Ann Cotton exploited the Victorian ideal of femininity and motherhood to avoid suspicion and gain sympathy from the public and the media.
4. Mary Ann Cotton was eventually convicted and hanged for the murder of her stepson Charles Edward Cotton in 1873.
5. Mary Ann Cotton was largely forgotten after her execution and overshadowed by Jack the Ripper, who appeared 15 years later.