In this fourth novel, Tuk Kae learns that her best friend Helen Childs has been kidnapped by a group of oil producers who want her fiance, Professor Rupert Scott, to abandon his work on exploiting the benefits of superconductivity at room temperate, a discovery made by his long time associate and Tuk Kae's mentor Dr Oshio Sato. Tuk Kae travels to Cambridge to help Rupert deal with the threats then flies to Italy to locate and rescue her friend from her captive who is like a giant and feels no paiin.