Challengers of the Unknown by Loeb and Sale

"Time has finally caught up with the Challengers of the Unknown. The world seems to have passed them by, and they are now relics, curious artifacts and faded celebrities. All that changes when their fabled mountaintop headquarters blows up and the quartet suddenly find themselves on trial for their lives. So begins the most audacious case of their careers in these stories from CHALLENGERS OF THE UNKNOWN #1-8. "