"Mission: Murder!"
The Sentinels come calling for Beast and Bobby as their design has improved, making an even more formidable foe. Bobby sacrifices himself so Hank can escape and warn the others. Meanwhile, Angel, Scott and Jean continue to search for Alex. Bobby is taken to Trask's HQ where he meets up with Alex (aka Havok) and Lorna. The Sentinels are now tracking down mutants and rounding them up. But Larry Trask is in for the same surprise as his father as the Sentinels turn on him, because he is a mutant.
First appearance of Alex Summers as Havok.