SmartAnswer
Smart answer:
After reading 1348 websites, we found 2 different results for "Who wrote Relentless (The Lost Fleet, #5)"
Jack Campbell
The Lost Fleet is a hard science fiction series by Jack Campbell (actual name John G. Hemry).
Source links:
ShareAnswerConfidence Score
by Tim Grover
Written by Tim Grover, Relentless is a truly inspirational book.
Source links:
ShareAnswerConfidence Score