The cat who walks through walls (1986) Parents Guide: Is the book OK for kids?

Frequent and characteristic of late-period Heinlein, the sexual content emphasizes the 'World as Myth' philosophy and the sexual liberation of the Howard Families. While not as graphically explicit as modern erotica, there is persistent discussion of polyamory, casual nudity without shame at the Golden Rule station, and several scenes where Colin and Gwen engage in sexual activity. The prose often focuses more on the philosophy of their relationship and 'line marriages' than anatomical detail, yet the romantic…

Moderate to strong sci-fi violence is present, often occurring with sudden, jarring lethality. The book begins with an on-page assassination at a dinner table and includes several shootouts where characters utilize advanced weaponry to lethal effect. Notable moments include a character losing a foot in combat multiple times and Gwen being nearly fatally wounded during the climactic mission to retrieve the computer Mike. Descriptions include the spray of blood, the smell of burnt flesh from blasters, and the…

Moderate in frequency and intensity, the dialogue reflects the era in which it was written. The text uses standard profanity such as 'hell', 'damn', 'bastard', and 'bitch' with regularity during moments of high tension or interpersonal conflict. There are also some gendered slurs and dated terminology common in 1980s fiction that may stand out to modern readers. It lacks the high-frequency 'f-bombs' found in modern gritty novels, but the characters' speech is salty and professional, befitting their roles as…

Light to moderate substance use is portrayed as a normal part of adult social life in this futuristic society. Characters frequently consume alcohol, including cocktails, wine, and scotch, during social interactions, strategy sessions, and celebratory dinners. A significant amount of time is spent detailing the specific drinks ordered at bars or served by automated dispensers. There is no illicit drug use central to the plot, and while characters drink to relax, they rarely display signs of debilitating…

The narrative explores complex themes of identity and the nature of reality through the lens of quantum mechanics and the 'World as Myth' concept. Political revolution is a major driver, particularly the history of the Lunar revolution and the ethics of regime change. Unconventional family structures, such as line marriages and genetic legacies, are analyzed through the interactions with Lazarus Long and his descendants. The protagonist, Colin Campbell, struggles with his own shifting identities and the…