Pros: Really interesting science fiction story about an immortal detective. The story itself spans generations, starting in the near future and ending in the not so near future. Also, the episodes are 45 minutes long
Cons: weird violent lesbian torture sex, weird violent heterosexual torture sex, weird violent (Whatever you call it when a hermaphrodite and a girl are in a sexual relationship) sex. And various other kinds of weird, lewd etc. Also a lot of violence and sex/nudity that come separately. 100% work unsafe, and most certainly 18+ (Though it's not considered hentai) Also, the episodes are on a monthly release schedule (Online, cause there's no way they could show this on public television) and there's only going to be six episodes.
Overall, a very good series that gets more interesting with every episode at least once you get past the gore/weird sex scenes/weird gorey sex scenes. Of course, a good number of people may consider those scenes a positive.
7/10 (Would be a 9.5 if the sex wasn't there to the point of being ridiculous.) If you're easily, or even not so easily, disturbed by violence and or weird sex scenes then Mnemosyne probably isn't for you.
If you can get past that because far too much exposure to videogames and google image search results have completely erased your moral standards, if you have no conscience that can be roused by anything you see on TV or your computer and if you like cyberpunk, then you should probably give Mnemosyne a shot.