1x7 - Dark Angel

Zack reappears and tells Max Lydecker has captured Brin, one of their Manticore sisters, and plans to do her harm. Max decides they must kidnap Lydecker and force him to reveal Brin's whereabouts. When Max and Zack discover that Lydecker was not behind Brin's disappearance, they have no choice but to team up with Lydecker to find their lost sister.