| 100% | HEDY | 4 | Lamarr whose early invention led to the development of GPS |
| 40% | DDT | 3 | Insecticide whose 1972 ban led to the comeback of the bald eagle |
| 38% | HELEN | 5 | Woman whose abduction led to the start of the Trojan War |
| 38% | PHONO | 5 | Lead-in to “graph,” in the early days of audio recording |
| 34% | FA{TALE}RRORS | 13 | They may lead to the blue screen of death |
| 34% | COUP | 4 | Revolt leading to the overthrow of existing authority |
| 33% | HADTHECODENAMECROSSWORD | 23 | Negotiations leading to the surrender of German troops in Italy _____ |
| 32% | MARCONI | 7 | 1909 Nobelist for contributions to the invention of radio |
| 32% | DUMBARTON | 9 | __ Oaks, conference that led to founding of the UN |
| 32% | EOLITHIC | 8 | Relating to the earliest period of the Stone Age |
| 32% | EDISON | 6 | Leading record label of the early 1900s |
| 32% | REDSCARE | 8 | Panic that led to the blacklisting of the Hollywood Ten |
| 31% | EMBRYONIC | 9 | In the earliest stage of development; rudimentary |
| 30% | COMBUBBLE | 9 | Lead-up to a Web implosion of the late 1990s (5) |
| 30% | FRANZ | 5 | Ferdinand whose death led to the First World War |
| 30% | APPLEGATE | 9 | Christina, one of the leads in Dead to Me |
| 30% | DERMA | 5 | Lead-in to the names of some skin products |
| 30% | ABACA | 5 | Philippine plant related to the banana whose leafstalks are the source of Manila hemp |
| 30% | WISDOM | 6 | "The road of excess leads to the palace of ___": William Blake |
| 30% | ABBA | 4 | Band whose jukebox musical led to a pair of films |
| 30% | DIANAROSS | 9 | Rose to fame as the lead singer of The Supremes |
| 29% | SHOWNOUT | 8 | Led to the exit |
| 29% | ARABSPRING | 10 | Series of uprisings that led to the ouster of Hosni Mubarak |
| 29% | RYAN | 4 | Name common to both the lead actors of "Barbie" and "Deadpool" |
| 29% | AERIALSHOT | 10 | Type of photo that led to the "Streisand effect" |
| 29% | DIAMONDJIMBRADY | 15 | Early railroad tycoon whose nickname is a hint to the starts of 17-, 23-, 51- and 62-Across |
| 29% | STAIRSTEP | 9 | Part of a flight leading to the next floor |
| 29% | JACKBLACK | 9 | "Jumanji: Welcome to the Jungle" actor and lead singer of the band Tenacious D: 2 wds. |
| 29% | THEELEPHANTMAN | 14 | 1980 film that led to the creation of the Academy Award for Best Makeup |
| 29% | SHOWSDOWN | 9 | Leads to the basement, say |