In Boston, powers are real, heroes are rare, and Jack McGriskin is a
private detective with a strong right arm and a nose for trouble. When
a missing person he's been hired to find turns up dead, he stumbles
into a network of corruption stretching from the streets of Boston to
the halls of Congress, and the clues lead him back to a world he'd
left behind. And just as things are starting to get back to normal, a
new shadow falls across his path in the form of the mysterious
Usurper.
Collects Jack Hammer #1-4 and Jack Hammer: Usurper #1-2.