Osgood wills her to save herself. This time, she rises to her feet, drawing strength from their love. He strides through the flames unharmed and, taking her in his arms, they walk safely out of the inferno. Heart number twelve is constructed with -coated valves, and functions perfectly. Helena calls Verdeschi with the news and implores him to find Michelle. As he proceeds, the cavern is rocked by a tremendous blast; a super-heated plasma flare spun off from the fire-storm has impacted on the surface. Between the heat and the barrage of plasma streams, Moonbase sustains considerable damage. The surface explosions cause rock falls and cave-ins in the catacombs, hindering the search. Verdeschi finally sights the fugitives; when he shouts out the news of the heart, Osgood smashes the security chief's hand-torch with a well-aimed rock and the couple slips away in the darkness. To even the odds, Verdeschi calls Maya down into the catacombs. She transforms into a Bengal tiger and guides the search party through the tunnels with her night-vision. Michelle can go no further and crumples to the ground. The Maya/Tiger corners Osgood while Verdeschi attends to the girl. A blast brings down the cavern ceiling on top of Osgood. Sending Michelle back with Maya and the guards, Verdeschi begins digging his friend out from under the rock fall. The girl is rushed to the operating theatre, where Helena performs the procedure. In spite of the perfectly functioning heart, Michelle's condition remains critical. With her husband missing, she has lost the will to live. When Verdeschi brings Osgood into the medbay, Michelle's vital signs improve. Husband and wife exchange a loving glance, then Osgood looks ceilingward and declares, "It's over." In his mind's eye, he sees the plasma fire-storm inexplicably veer away from the Moon and speed off into space. With the temperature back to normal and damage repairs underway, Helena and Verdeschi speculate if some sort primal intelligence existed in the fire-storm, it could have somehow made contact with Osgood's unbalanced mind. If so, this communion could also explain Osgood's temporary gift of clairvoyance. Eagle One returns and Koenig contacts Helena on touchdown. Welcoming him home, she thanks him for the . He is initially surprised by this unexpected confession. Her obvious delight at having saved Michelle's life defuses the situation though, and Koenig returns the smile of the woman he loves. Cast Starring Martin Landau