The Door into Summer

The Door into Summer
Publication date:1956.10
Genre:Science fiction novel
Preceded by:Time for the Stars
Followed by:Citizen of the Galaxy
Wikipedia page

“The Door into Summer” is a science fiction novel by Robert A. Heinlein, originally serialized in The Magazine of Fantasy & Science Fiction in October, November, December issues of 1956, and published in hardcover in 1957. In three separate Locus Magazine readers polls from 1975 to 1998, it was judged the 36th, the 29th, or the 43rd all‐time best science‐fiction novel.

The novel was triggered by a remark that Heinlein’s wife Virginia made when their cat refused to leave the house: “he’s looking for a door into summer.” Heinlein wrote the complete novel in only 13 days. No rewrite was needed, only some light editing that Heinlein did himself.


Brilliant engineer Dan Davis finds himself hoodwinked by his greedy business partners and forced to take the Long Sleep, placing him in suspended animation for 30 years. But his partners never anticipated the existence of time travel, enabling Dan to exact his revenge and alter his own future…

Alternative covers

The Door into SummerThe Door into SummerThe Door into SummerThe Door into SummerThe Door into Summer