“A fascinating thriller… Linden does a masterly job of integrating intriguing speculative science into a page-turning plot.” —Publishers Weekly, starred reviewThe deeper she digs, the more people want her buried.Anthropologist Claire Knowland is about to stumble upon a discovery that will rewrite human history. What begins as a routine excavation erupts into a high-stakes game of survival when her team unearths evidence of an ancient intelligence that defies everything we believed about evolution.But some truths are too dangerous to uncover. As corrupt officials and ruthless oligarchs close in, Claire finds an unlikely ally in geologist Sergei Anachev, who harbors a secret of his own. Together, they race against time to protect a discovery that could revolutionize our understanding of human consciousness—or get them both killed.From the celebrated author of groundbreaking works in science comes a pulse-pounding thriller that blends cutting-edge science with international intrigue. Deep Past takes readers on a journey where ambition collides with the powers that be, and the biggest scientific discovery of our time might be lost to the depths of history... again.Perfect for fans of Michael Crichton and James Rollins, this hard sci-fi thriller explores the tantalizing possibility that human intelligence might not be as unique as we thought—and the lengths some will go to keep that secret buried."An immersive tale that is both intellectually enlivening and genuinely entertaining." —Kirkus Reviews