Gabriel Knight 1: Sins of the Father
"Gabriel started out writing a book on voodoo, but now he's fighting for his very soul. Gabriel Knight is the last in a long line of Shadow Hunters, those fated to fight the dark forces of the supernatural. Haunted by a centuries-old curse, he is tormented by nightmares. Now he must spend every waking moment scouring the side streets and back alleys of New Orleans for the key to his dark past. And when he sleeps, the nightmare begins."
Gabriel Knight 2: The Beast Within
Gabriel Knight's second case begins in Rittersburg, Germany where he has been living for the past year. The villagers of Rittersburg show up with flashlights demanding that he fulfill his role as Schattenjager. The villagers claim that a child was murdered by a wolf, but not just an ordinary wolf, a "werewolf." After hearing from the villagers that the murder was being blamed on two missing wolves from a zoo, Gabriel sets out to investigate the murder of the young girl and finds that there have been murders going on for centuries. Grace Nakamura travels to Rittersburg to help Gabriel against his wishes. Grace's research takes her into the life of King Ludwig II. Gabriel believes that Grace's research into the history of King Ludwig has no relevance to his current case, and plans to keep her away from the danger. However, Grace realizes the importance and relevance of her research to Gabriel's present case, when she uncovers a long history that werewolves and the Schattenjägers have shared. After this, it is a race against time.
Gabriel Knight 3: Blood of the Sacred, Blood of the Damned
Blood of the Sacred, Blood of the Damned is set in a small village and valley in rural Europe. The village, Rennes Le Chateau, is a real village and is the location of a Great Enigma -- either that or a Great Scam, depending on your level of belief.
The case begins when Gabriel is invited for a weekend at the home of a currently dethroned royal scion. Grace is delighted, assuming that at last they're moving into the kinds of circles a family like the Ritters ought to hobnob with. But it turns out that the 'Prince's' motivation for inviting Gabriel was not a social one. He has a new infant son and is concerned for his safety because the Prince's family has been plagued for generations by what seem to be a secretive sect of vampires.
It turns out the Prince was right to be afraid. The very first night Gabriel watches guard over his infant son the boy is kidnapped. Gabriel gives chase and winds up at the train station. He follows the kidnappers to Rennes-le-Chateau but quickly loses their trail.
Gabriel will come to realize that the mystery that surrounds the Prince's family and the mystery of this ancient little town are not only connected, but will involve both very real current political agendas and ancient secrets. Once at the town, Gabriel discovers that a tour group arrived about the same time he did. He considers all of the members of the tour suspects even, perhaps, his old friend Mosely, who just happens to be 'on vacation' with the tour. Grace soon joins him and while Gabriel investigates the suspects and his leads on the kidnapping, Grace is convinced that the mystery is tied to the Rennes-le-Chateau's enigma and she sets out to solve it.
