From the writing, contrived incidents and wooden characters one would suspect this was written for teenagers. But the setting, on a moon of vice called Vesa, belies this. Jules and Yvette are sent to Vesa to investigate an underground series of kidnappings - apparently 30 people go missing a day but the compromised authorities have let this happen for 20 years!
Every character cliche is unleashed here and Jules and Yvette get out of their scrapes with their usual bluster, kung fu and bravado. Doc Smith has missed a good opportunity to create a melange of races and colourful people by instead opting for the 'brawn always wins' scenario. Avoid, despite the pretty cover art.