Books: Triangle or Circle? ,

PORTRAIT BY CAROLINE — Sylvia Thompson — Little, Brown ($2.50).

If you are in love with another man's wife or another woman's husband, what are you going to do about it? If you were really in such a fix, you would probably keep it as dark as possible, but if you are a novelist looking for human situations, you will tell as much as you can about everybody concerned, make a book of it. That is what Novelist Sylvia Thompson has done.

Caroline was intelligent and attractive. Her doctor-husband Maurice was a nice fellow though not very demonstrative. She had a daughter and...