Dan Davis, a brilliant but naive inventor, finds his world crumbling around him in 1970. Betrayed by his greedy business partner, Miles Gentry, and his opportunistic fiancée, Belle Darkin, he loses control of his revolutionary robot patents. Heartbroken and destitute, with only his loyal, independent-minded tomcat, Pete, for companionship, Dan opts for the "Long Sleep"—suspended animation—hoping to awaken 30 years later, in a future where his troubles might be forgotten.
Waking up in 2000, Dan discovers a world transformed by the very household robots he invented. To his astonishment, they've been massively produced and, even more strangely, patented under his own name, though he remembers no such events. Driven by a thirst for justice, a yearning for answers, and an unwavering desire to reunite with Pete and the one true love he left behind, Rikki, Dan must unravel a complex web of corporate intrigue and temporal paradoxes. His only path forward involves a daring and dangerous journey back through time, navigating twists and turns to reclaim his legacy, confront his past, and secure his future.
Critical Reception
"Hailed as a quintessential work of science fiction, 'The Door into Summer' remains a beloved classic that showcases Heinlein's masterful blend of intricate plotting, inventive technology, and enduring human themes."
Adaptations
Japanese film adaptation (2021) titled 'Natsu e no Tobira: Kimi no Iru Mirai e'.