"Doctor Nikola Returns" by Guy Boothby follows the cunning Doctor Antonio Nikola, a diabolical mastermind reminiscent of literary icons like Fu Manchu and Sherlock Holmes. In this thrilling sequel to "Doctor Nikola's Revenge," Nikola and his companion Wilfred Bruce embark on a perilous journey to Tibet in search of a secret society with the power to extend life, perform magic, and even raise the dead. This tale of ambition and moral complexity resonates today as it explores themes of power, the quest for immortality, and the ethical dilemmas that accompany great knowledge.