I originally watched this when it aired on PBS in the 1990s and loved it so much that I spent a large chunk of time trying to figure out how to get a (VHS!!) copy here in the US. When our local PBS station gave it away as part of their pledge drive, I was in heaven. Since I no longer own a VCR, I was very excited to find the digital copy available on Amazon.
The story follows the ups and downs of a woman who does anything and everything she can to survive and occasionally thrive. Moll is a thief, a wife, a servant, a whore, a mother, an abandoner of children, etc. She is sometimes "good" and often "bad" but you are always invested in her survival, even at the times that you don't like her very much. In a weird way, she reminds me of Scarlet O'Hara from Gone with the Wind, but with a lot more downtrodden moments. There are quite a few mature themes throughout the series, so some people may wish to supervise if they have any children that are interested in watching this miniseries.
Alex Kingston's acting is amazing and really draws you into the character and it's a fun surprise to realize that a young Daniel Craig plays one of the pivotal characters.