Green Lantern Vol 1: Intergalactic Lawman

Legendary writer Grant Morrison is taking Green Lantern back to his roots, exploring the popular hero's role as the universe's best space cop. It's Law and Order in space as Hal Jordan encounters a mysterious alien hiding in plain sight, setting off a chain of events that will bring the Green Lantern Corps to its knees!
Grant Morrison (All Star Superman, Happy, Final Crisis) is joined by superstar artist Liam Sharp (The Brave and the Bold: Batman and Wonder Woman) as together they explore just what makes Hal Jordan tick. What his personal motivations are. And how the decisions he makes every day will affect his legacy as the greatest Green Lantern of all time!
Its Law and Order in space! Earth's Green Lantern, Hal Jordan, encounters a mysterious alien hiding in plain sight, setting off a chain of events that will bring the Green Lantern Corps to its knees. There's an inter-galactic conspiracy afoot, as well as a traitor in the Green Lantern Corps' ranks. Hal Jordan has faced the universe's greatest threats but what he faces next will challenge everything he believes in. The rules of planet Earth do not apply in outer space. To what lengths will Hal Jordan go to to get his man? Find out in this mind-bending adventure that will forever change how you see the Green Lantern Corps!
Collects: The Green Lantern #1-6