Once Humans is worthy of Awesome Indies approval. The plot involves surprising revelations, double crosses and unexpected events which make for a good story, and the character of Dan grows as the book progresses. Though I found Marino’s style of leaving a lot unsaid unsatisfying – whole scenes sometimes appear to be missing from the story – the book has enough action and interest in the plot to make up for the short fall. There are a few cumbersome sentences and some copy errors but not enough to be of real concern. 4 stars.