Gabriel Knight is (arguably) the quintessential adventure game series of the '90s. They're modern mysteries notable for sympathetic villains and deeply historical plots, featuring the history of voodoo, King Ludwig II and his ties to Wagner, and the supposed hidden treasure of the Knights Templar in the French village of Rennes-le-Château, each with a creepy supernatural element tossed in. Grace is introduced as Gabriel's assistant in the bookstore he owns and provides plenty of snark while deflecting his attempts to get into her pants.