The Eternals #1-6 (2003-2010)

Mira is one of the Eternals (enforcers for the Diamond Industry). Probably the best, able to track thieves to the other side of the planet and kill them without hesitation. But Mira will disappear, presumed murdered. In order to find her killers, her agency asks her twin sister, Uma, to take her place. Uma is different. Suicidal, ill at ease, she's nothing like her sister and yet will have to become her if she is to succeed. This issues concludes the "Black Diamonds" story-arc.