Doctor Nikola meets Gilbert Pennethorne, an ordinary man whose life has gone downhill. He was tricked by his former boss who stole information about the location of a gold mine. Gilbert is determined...

Doctor Nikola has finally found the secret to immortality, but he hasn’t put it to the test yet. He needs someone who can help him conduct some experiments. Doctor Ingleby seems to be the perfect choice...

Doctor Nikola sets out on another adventure, which this time leads him to Venice. There he meets the old acquaintance – Richard Hatteras – whose fiancée Nikola had kidnapped, and time hasn’t resolved...

Doctor Nikola and Richard Hatteras meet for the first time. Doctor Nikola is a mysterious evil mastermind. Richard Hatteras, on the other hand, is an ordinary Australian sailor. Doctor Nikola has a plan...

Doctor Nikola’s goal in life is to achieve world domination and immortality. When he finds out that a secret society in Tibet is way more powerful than any other human being or government on the planet,...