Sting (Middle-earth)
Sting has the magical ability to detect orcs or goblins nearby, glowing blue in their presence, as it did when the Fellowship encountered orcs in the mines of Moria. Tolkien establishes this as a common property of First Age Elf blades, particularly those forged in Gondolin. Sting is also exceptionally sharp. Bilbo manages to thrust it without effort deep into a wooden beam at Rivendell. Frodo also wounds a troll in Moria, after Boromir notches his own sword with his attempt. Sam uses Sting to cut through the giant spider Shelob's strong webs with ease, and also wound the spider, driving it away from the paralyzed Frodo.
Sting of the Zygons
Sting of the Zygons is a BBC Books original novel written by Stephen Cole and based on the long-running science fiction television series "Doctor Who". It features the Tenth Doctor and Martha Jones. It was published on 19 April 2007, after the television debut of companion Martha Jones, alongside "Wooden Heart" and "The Last Dodo".