"The Cat Who Walks through Walls" by Robert A. Heinlein
https://www.amazon.com/Cat-Who-Walks-through-Walls/dp/0441094996/

Book number seven in a very loose series of eight science fiction books.
I reread the well printed and well bound trade paperback published by
Ace in 1988 that I bought new in 1988 (I think !). I plan to reread "To
Sail Beyond The Sunset" and "The Rolling Stones" soon. I have yet to
decide if I am going to reread "The Number Of The Beast".

The book dedication is quite excellent, “To Jerry and Larry and Harry,
Dean and Dan and Jim, Poul and Buz and Sarge (Men to have at your back). R.A.H.”
"“Jerry” is Jerry Pournelle (1933 – ); His wife Roberta was a dedicatee of Friday."
"“Larry” is Larry Niven (1938 – )."
"“Harry” is G. Harry Stine (1928 – 1997); See the Have Space Suit - Will Travel dedication."
"(All are science fiction authors.)"
"“Dean” is Dean Ing, Ph.D., a professor of communications in Eugene, Oregon and a science fiction author."
"“Dan” is Lt. General Daniel O. Graham, U. S. Army (Ret.) (d. 1995), founder and director of High Frontier and an originator of the SDI project." "“Jim” is Jim Baen (1943 – ), science fiction author and editor." "“Poul” is Poul Anderson (1926 – 2001), science fiction author." "“Buz” is Francis Marion Busby (1921 – ), science fiction author and fan (his wife Elinor was a dedicatee of Friday)."
"Finally, “Sarge” is Barry Workman, a friend of Jerry Pournelle’s."
"Jim Baen mentioned in private email that he personally was very touched
when he received his inscribed copy of the book, and he knew that all
the other dedicatees were as well. He also noted that all of these
people participated in the Citizen’s Advisory Council on National Space Policy, formed by Jerry Pournelle in 1980, which prepared much of the
Reagan Administration Transition Team policy papers on space. Heinlein attended several of these meetings."
http://www.nitrosyncretic.com/rah/dedications.html

This book starts with a murder in chapter one in a popular restaurant in
one of the large habitats circling the Moon after the year 2136. Dr.
Richard Ames and his dinner date Gwen Novak aka Hazel Stone from the
Lunar Revolution, are rudely interrupted by an uninvited guest who is
murdered at their table. And thusly starts the crazy fleeing to the
Moon, time shifting, universe jumping of their time together.

If you are offended by sex, and I mean lots of sex, in a book then I
would advise you to stay away from this book and series. Except for the
first book in the series, "Methusalah's Children". All of the books,
except the first book, have group marriages in or mentioned in them
which was first expounded by Heinlein in "The Moon Is A Harsh Mistress"
book.

The rather loose book series is (there may be more):
1. The Moon Is A Harsh Mistress
2. The Rolling Stones
3. Methuselah's Children
4. Time Enough For Love
5. The Number Of The Beast
6. The Pursuit Of The Pankera
7. The Cat Who Walks Through Walls
8. To Sail Beyond The Sunset

There is a rather excellent timeline of Heinlein's books at:
https://www.sffchronicles.com/threads/579486/

Jo Walton, the Heinlein apologist, says that "The Cat Who Walks Through
Walls" is not Heinlein's worst novel, but, it is too long and the end
plot is infuriating.
https://reactormag.com/heinleins-worst-novel/

My rating: 5 out of 5 stars
Amazon rating: 4.6 of out 5 stars (273 reviews)

Lynn

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