Wikipedia page about this book: https://en.wikipedia.org/wiki/Gladiator_(novel)

Release date is 2013-06-11

Produced by Greg Weeks, Mary Meehan and the Online
Distributed Proofreading Team at http://www.pgdp.net

"Gladiator" by Philip Wylie is a science fiction novel published in 1930. A scientist creates a serum that grants superhuman abilities and injects his pregnant wife without her knowledge. Their son Hugo Danner is born with incredible strength, speed, and bulletproof skin—but spends his life hiding these gifts from a fearful world. As Hugo searches desperately for purpose and belonging, he confronts the isolating burden of being different. Widely considered an inspiration for Superman, this groundbreaking novel explores what happens when extraordinary power meets ordinary human longing. (This is an automatically generated summary.)

Original publication data not identified