Possible Clues:

• See (with 26 down) 5
• Sources of pioneering science fiction
• 'The Shape of Things to Come' author
• Underground water sources
• H.G. who wrote "The War of the Worlds"
• Sources for English writer or American actor, we hear
• "The War of the Worlds" writer
• Muddy Waters bandmate Junior
• 'The Invisible Man' author H.G
• He's been called the "Father of Science Fiction"