11.   He was ready to unlock the secrets of the mysterious cave.

12.   In notebook after notebook, he sketched birds in flight, masterfully detailing their motions and the shapes of their wings in an attempt to unlock their secret.

13.   It was in a log cabin along Four Holes Swamp where Wade Quattlebaum said he unlocked a secret of physics too revolutionary for most scientists to understand.

14.   Now scientists at Cornell University have taken an important step in unlocking its secret.

15.   She is in my play because she was able to unlock the secret of the Ruskin marriage.

16.   Some had little success in unlocking the secrets of the Red Planet.

17.   The deadly letter now sits at a high-security Maryland lab, where FBI agents attempt to unlock its secrets.

18.   The device allows you to maximize firepower, skip levels and unlock secrets with your favorite video game.

19.   The film, about a mathematician who unlocks the secret of the stock market, is only one piece of an unlikely pi trend.