
Part of Series
On the outskirts of Sunnydale, recent rains have uncovered the remains of a five hundred-year-old Spanish expedition. But one of the artifacts, a smoky mirror with an ornately carved obsidian frame, goes missing, along with the history teacher who found it. And when Buffy narrowly escapes the attack of a black jaguar while on patrol, Giles puts the gang into research mode. An ancient volume identifies the missing mirror as a magical object formed by the Aztec god of darkness. A mortal who looks into the mirror will see his or her fate—and can be manipulated by the evil god, who is scheming to regain his power. Taking their destinies into their own hands, the Slayer and her friends rush into a ferocious battle between light and darkness in the shadows of a massive Aztec temple, a battle against perpetual night—and the evil that thrives in the dark hours
Author

Diana G. Gallagher was an American author who wrote books for children and young adults. She also wrote the space opera The Alien Dark (1990), but was best known for her tie-in work for television properties including Buffy the Vampire Slayer, Angel, Sabrina the Teenage Witch, Charmed, Star Trek and The Secret World of Alex Mack, among others. She was also a prolific filk creator, winning Pegasus Awards in 1986 and ’94. Gallagher won a Hugo Award for Best Fan Artist in 1988 under the name Diana Gallagher Wu. She sometimes also wrote under the name Diana Burke. Born in 1946, in Paterson, New Jersey, she lived in Florida with her husband, the writer Martin R. Burke, who predeceased her in 2011. Gallagher was married four times; her third marriage was to author William F. Wu (divorced 1990). Gallagher died December 2, 2021 of chronic obstructive pulmonary disease at 75 years of age.