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Content snapshot
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Violence
Barely any
Minimal violence; the time travel complications create some peril
Language
Barely any
Mild language in Heinlein's SF register
Sexual Content
Some
The romance between the adult protagonist and a woman he first met when she was eleven is presented uncritically by Heinlein; contemporary readers may find this disturbing
Substance Use
Barely any
Some drinking
Emotional Intensity
Barely any
Low psychological intensity overall despite the problematic romance element
What this book is about
Heinlein's SF novel follows Dan Davis, a brilliant engineer who is cheated by his business partner and fiancée, suspended in cold sleep, and eventually uses time travel to undo the betrayal. The plotting is tight and the ideas are engaging. The novel contains a romantic element that is disturbing to modern readers: the protagonist, upon time traveling, ends up with a girl he knew as a child (who has grown to adulthood). Heinlein presents this without the sensitivity contemporary readers would expect.
Notes for sensitive readers
Reader-flagged moments and themes that may affect your experience.
Romantic relationship with a woman the protagonist knew as a child
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