Classic children's novel, and what to look for in this puzzle's three other longest answers

Question:

Answer:

THESECRETGARDEN

Length:

Similar Crossword Questions:

Theme of this puzzle hidden in the seven other longest across answers
It precedes the last words of the four longest puzzle answers
Cyberchuckle, and a hint to this puzzle's four longest answers
'Old MacDonald' sequence found in this puzzle's 10 longest answers
Things that this puzzle's nine longest answers have
Word that goes after the start of and before the end of the five longest answers in this puzzle
What this puzzle's four longest answers have in common
Dream found in this puzzle's seven longest answers
The four longest answers in this puzzle end in them
Julian Assange's controversial website, and a hint to what's missing from this puzzle's four longest answers
Ones in charge of a case ... or a literal hint to the eight other longest answers in this puzzle
Siesta taken by this puzzle's longest answers
It's zero in free-fallÂ—and, put another way, a hint to how the four longest puzzle answers were formed
Ocean "crossing" this puzzle's four longest answers (abbr.)
Driveway stuff (and word that's hidden in this puzzle's four longest answers)
Boat lifters found in this puzzle's three longest answers
Piece that can follow the ends of the nine longest puzzle answers
Resort hidden in the five longest puzzle answers
It can follow the ends of this puzzle's eight longest answers
Deg. of the professional who may instruct you to do the last words of the four longest puzzle answers
Things hidden in this puzzle's eight longest answers
"Dog the Bounty Hunter" network, and a hint to the theme in this puzzle's four longest answers
Word "split" in this puzzle's eight longest answers
They're found at the ends of this puzzle's three other longest answers
Exhibit found in this puzzle's four longest answers