The Brain Sinner by Alan Edward Nourse

Robert Roberts was waiting, nervous as a cat, when Faircloth arrived at the Security office. There were deep circles under his pale grey eyes, and a dark stubble on his chin. He greeted Paul with a silent handshake; then they went back into the rear office, with its modern panelled wall looking out across the valley to the tall white buildings of the Capitol. Once it had been an inspiring sight to Faircloth. Now he hardly even noticed. A rocket rose in the morning air, leaving its white vapor trail like a pillar of cloud behind it. The weekly Venus rocket, probably, or maybe one of the dozens of speculator ships off for Titan. Faircloth scowled and sank into a relaxer with a sigh. "I'm sorry, Bob," he said. "It was a bust. I couldn't help it."

Roberts mixed a drink and shoved it across the desk to Paul; then he touched off the end of a long black cigar. "What's done is done," he said sourly. "You thought he was sewed up, and it turned out that he wasn't." He turned worried eyes to Faircloth. "What we've got to know is why he wasn't sewed up. Something went sour. What was it?"