Jacqueline Susann novel, and the problem with some of the answers in this puzzle

Question:

Answer:

ONCEISNOTENOUGH

Length:

Similar Crossword Questions:

TV feature, and a clue to six other answers in this puzzle
Letter that begins and ends this puzzle's six longest answers
Theater VIP section, as suggested by the answers on this puzzle's edges
Triatomic gas in a thinning layer ... and, symbolically, what appears in this puzzle's four longest answers
Role model hidden in this puzzle's longest answers
Worries, and word anagrammed in part of four puzzle answers
Exam "filled in" by three answers in this puzzle
Where one might see the sounds embedded in this puzzle's theme answers
Where to find the first words of the four longest puzzle answers
Hoop group hidden inside this puzzle's three longest answers
Show since 12/17/1989 whose five main family members are hidden in this puzzle's other long across answers
Item hidden in each of the 15-letter answers in this puzzle
Bar found at the end of this puzzle's seven longest answers
Neutral color running through the four longest puzzle answers
ConfuseÂ—or what to do to four common phrases to form this puzzle's theme answers
Word before the first word in this puzzle's theme answers
Geeky sort found within this puzzle's four longest answers
Statement about nine answers in this puzzle
Each of the titles in this puzzle's theme answers, e.g.
Bad guy hidden in eight puzzle answers
Cash advance taken by this puzzle's longest answers
String of letters found in this puzzle's longest Across answers
Regular stuff found inside this puzzle's three longest answers
What the puzzle's long answers all were
Puzzle honoree found in eight long answers