Part 1: Baltar attempts to lure Galactica into range of a gigantic pulsar cannon. Adama becomes aware of the trap and sends in a team of commandos to destroy it.

Part 2: Apollo and Starbuck lead a group of convicts on a possible suicide mission to destroy the cannon, which is located on an icy planet.

Guest Stars:

• Christine Belford - Leda
• James Olsen - Thane
• Richard Lynch - Wolfe
• Roy Thinnes - Croft
• Denny Miller - Ser 5-9
• Britt Ekland - Tenna
• Dan O'Herlihy - Dr. Ravishol 
• Alan Stock - Cadet Cree
• Alex Hyde-White - Cadet Bow
• Larry Cedar - Cadet Shields
• Curtis Credel - Haals
• Patrick Milholland - Killian
• Walt Davis - Vickers