Hey there :)
When I swatched Essence's Undead from their Eclipse LE, I knew I saw something similar somewhere. A few days (or better weeks) later, I knew, which one it was- Night Prowl by Wet'n'Wild.
Before I removed the polish, I experimented a bit with it. I used my clean-up brush, dipped it into polish remover and carefully wiped off a layer of polish on Undead. It worked and after wiping off the polish, you can see more of the glitter in Undead, see for yourself. (you can click on the pictures)