The clangor of the alarm made Murdoch curse. He looked at the celestial globe and his heart knew real fear for the first time. This was no meteor shower, he knew from the random pattern. Something was after him, and Murdoch knew who and what it was. He cursed Channing and Venus Equilateral in a loud voice. It did no good, that cursing. Above his head, the triply mounted turret danced back and forth, freeing a triple-needle of Sol's energy. At each pause another interferer went out in a blaze of fire and a shock-excitation of radio energy that blocked, temporarily, the finder circuits. And as the turret destroyed the little dancing motes, more came speeding into range to replace them, ten to one. And then it happened. The finder-circuit fell into mechanical indecision as two interferers came at angles, each with the same intensity. The integrators ground together, and the forces they loosed struggled for control. Beset by opposing impulses, the amplidyne in the turret stuttered, smoked, and then went out in a pungent stream of yellowish smoke that poured from its dust-cover in a high-velocity stream. The dancing of the turret stopped, and the flashing motes in the sky stopped with the turret's death. One hundred and thirty farads, charged to ten thousand volts, touched the lithium-coated, aluminum side of Murdoch's _Black Widow_. Thirteen billion joules of electrical energy; thirty-six hundred kilowatt hours went against two inches of aluminum. At the three thousand miles per second relative velocity of the torpedo, contact was immediate and perfect. The aluminum hull vaporized under the million upon million of kilovolt-amperes of the discharge. The vaporized hull tried to explode, but was hit by the unthinkable velocity of the torpedo's warhead. The torpedo itself crushed in front. It mushroomed under the millions of degrees Kelvin developed by the energy-release caused by the cessation of velocity. For the atmosphere within the _Black Widow_ was as immobile and as hard as tungsten steel at its best. The very molecules themselves could not move fast enough. They crushed together and in compressing brought incandescence. The energy of the incoming torpedo raced through the _Black Widow_ in a velocity wave that blasted the ship itself into incandescence. In a steep wave-front, the vaporized ship exploded in space like a supernova. It blinded the eyes of those who watched. It overexposed the camera film and the expected pictures came out with one single frame a pure, seared black. The piffling, comparatively ladylike detonation of the System's best and most terrible explosive was completely covered in the blast.