Halo: Blood Line Issue 4

Halo: Blood Line Issue Four is the fourth issue of the Halo: Blood Line limited comic book series. It was released on March 24, 2010.

Official Marvel Summary
"Time is running out for Spartan: Black. Their commanding officer is about to be dissected by the psychotic monitor of The Line. Their AI Iona has been infected by Forerunner technology. One of their own has turned against them, pushing their already uneasy alliance with the Elite to the brink. A massive Covenant armada is converging on their position. Only a desperate gamble will save them -- but that's why you always bet on Black."

- Marvel.com