D Minus Zero
The Andromeda is attacked by an unknown enemy that they can't hit. It starts with them going into a debris field of a destroyed ship, the enemy starts firing and they lose just about everything and retreat. After several rounds Harper finishes a device that well make the Maru look likes the Andromeda Asccndant, but just before he gets sick from radation from the sun. The trick works and they destroy themselves when they are about to capture the ship.