Outsiders: Five of A Kind #1

Countdown - Grudge Match
As he prepares to take the leadership of the Outsiders from Nightwing, Batman contemplates the team's lineup. He's unsure of whether several of the current members have what it takes to be on the team he envisions. To find out if Captain Boomerang has what it takes, he sends Owen and Nightwing to a S.T.A.R. Labs orbital facility. Recently, all contact with the station personnel was lost, and the station itself went dark. All this happened only hours after the station made contact with the entity known as Chemo.
Release Date: 2007