Ok, so I did find part 2 of Frankenstein (2004), the mini-series on Popcornflix.com. Its entitled Frankenstein - Night 2. You can watch it here if you are interested and in case you missed the first part of the series, Frankenstein - Night 1, you can click here to start watching!
Both part 1 & 2 of Frankenstein (2004) are free to watch and don't require any downloading. Simply press play and watch them from Popcornflix's website.