Common Sense Note
Parents need to know that this British drama about a werewolf, a vampire, and a ghost examines what it really means to be human. The supernatural roommates support each other as they try to manage their unique physical conditions and seek happiness. In the process, the series shows that despite their dark needs and less-than-human cravings, they can be just like anyone else -- in need of human contact, friendship, and love. Don't tune in expecting Twilight, though: The show is aimed at older viewers and features swearing, the occasional passionate sex scene/brief partial nudity, and a fair bit of blood and gore.
Sexual
Content
A few sex scenes show half-clothed people locked in passionate embraces. Mitchell (the vampire) has trouble separating his erotic needs from his thirst for blood, and his amorous encounters tend to end badly for his partners. George (the werewolf) is shown nude when he transforms. It's not sexy, but it does show just about everything except his penis.
Violence
The vampires are sometimes shown attacking and feeding on humans, and there's plenty of gore and blood. There are fewer scenes featuring werewolf attacks, but they tend to be even bloodier and gorier.
Language
Some swearing, including unbleeped uses of "s--t" and "f--k."
Social
Behavior
Sends the message that even vampires, werewolves, and ghosts have fundamental human needs, including the desire for companionship, love, and human connection (being undead, it seems, doesn't necessarily make someone less human).
Consumerism
A few major retailers, like Ikea, are mentioned by name.
Drugs / Tobacco /
Alcohol
Social drinking in bars and when characters entertain at home.