| SECRETSAUCE | Special key to the success of something |
| SPACEBAR | Special key and tempo in second piece of music (5,3) |
| DESCRIBED | Recounted heroic exploit about special key (9) |
| IMMOBILISER | Device on a car which prevents it from starting unless a special key is used (11) |
| ONEBILLION | Number of dollars Taylor Swift's net worth has grown to this month, thanks in part to the success of her concert movie "Taylor Swift: The Eras Tour" |
| TEAMPLAYER | *One dedicated to the success of the group |
| ATFOLSOMPRISON | After smashing up the stage lights during a 1965 Opry performance, Johnny Cash was allowed back three years later due to the success of this 1968 live album |
| HELP | Contribute to the success of (4) |
| TOASTED | Drank to the success of being browned off? |
| ROCKEFELLER | The success of his venture, the Standard Oil Company, made him the richest man in the world, John D |
| ALANPARSONS | English audio engineer who formed his own Project after the success of Pink Floyd's The Dark Side of the Moon (4,7) |
| TRIVIAGAMESINFASHION | Cause of the success of "Who Wants to Be a Millionaire"? |
| FOLLOWUP | A further examination of a patient to monitor the success of earlier treatment (6,2) |
| WISE | Which US businesswoman developed the marketing system of "party plan" and was responsible for the success of Tupperware? (4) |
| ECLAT | The success of the strange French cat (5) |
| HOST | "The ___" (Stephenie Meyer novel that never saw the success of "Twilight") |
| TIEIN | Product designed to benefit from the success of another (3-2) |
| WHITELIE | You and I admit the success of the golf ball position is a fib (5,3) |
| STOODFOR | "Everybody knew who I was, and nobody knew what I ____" (Colin Wilson, on the success of his first book, The Outsider) |
| ENVIOUS | "The _ man grows lean at the success of his neighbour": Horace (7) |