The $9 t-shirt deal of the day over at Teefury is a Doctor Who-inspired shirt called, “Count the Shadows” by artist Jordan M. Dalton, aka dangerpinsx.

The sale at Teefury began at midnight EST (Sunday, December 12, 2010) and will continue for 24 hours from then, and once it’s over, it’s gone forever.

The t-shirt design is inspired by the Season 4 Doctor Who episode “Silence in the Library” and its second part “Forest of the Dead” where the Doctor encounters archaeologist River Song and her team of explorers. The shirt has The Library background from those episodes with the banner reading “Vashta Nerada,” the name of the monsters who are in the shadows, which is why there’s also the warning at the bottom, “Count The Shadows.” At the center shirt is one of the explorers after they’ve been attacked by the Vashta Nerada.

The limited-edition t-shirt is available in Men’s (including 2X) and Women’s sizes, and both are in black.