Halo: Blood Line Issue 3

Halo: Blood Line Issue Three is the third issue of the Halo: Blood Line limited comic book series. It was released on February 24, 2010.

Marvel summary
"The Elites and Spartans' uneasy alliance to rescue their captured comrades from the depths of the ancient complex is pushed to the breaking point when a traitor is revealed in their midst. But is the turncoat human, Covenant...or something even more terrifying?"

- Marvel.com