E. C. Tubb’s Seetee Alert! is the sixth volume in his Cap Kennedy series, written under the penname Gregory Kern. It is the only Cap Kennedy book I’ve ever read.
At the height of a carnival on poverty-stricken planet Somope, a daring theft leaves a trail of bodies in its wake. The item stolen? A disgraced scientist’s seemingly valueless notebook.
Meanwhile Cap Kennedy and his crew are traveling through deep space in their starship Mordain, testing a cutting-edge force field. The test takes a deadly turn when the craft encounters something far more deadly than expected: a contraterrene (AKA Seetee or antimatter) storm!