Parents need to know that The Witcher is a series based on the book series and popular video games of the same name. As in the game, the action is set in a magical world in which "mutant" characters called Witchers are able to slay monsters. The monster battles are righteously scary, with giant creatures equipped with scary faces, claws, unearthly long arms, and the like; when main Witcher Geralt (Man of Steel's Henry Cavill) fights them, there's dark blood, scary music, hacked off limbs, and visuals of the dead bodies of monsters. There's even more gore in the human battles, with soldiers fighting on the battleground and grievous injuries: stabbings, slashings, decapitations, throats are slit, a man's head is halved with an axe with bright-red spouting blood and gore. Sexual violence is referred to, but not seen on-screen. Some characters have otherworldly powers and can cause magical destruction, but the show's sympathies clearly lie with characters who are downtrodden and despised such as Witchers and Elves. Romance plays a part in some storylines and sexual images are frequent: characters have sex that includes nudity, come upon an orgy at a party, and non-sexual nudity (breasts and buttocks) occurs in a magical illusion. Language includes "f--k," "s--t," "son of a bitch," "damn," and "hell." Characters drink beer in bars but don't get drunk; potions play a part in the story, used for suicide and abortion, among other purposes. Female characters have strong roles and some members of the cast are people of color; themes of courage, teamwork, and perseverance are illustrated in magical quests aimed at righting wrongs.