Highlights from this Sunday's Times (1/24/10)

Frank Serpico, 1971. (Librado Romero/The New York Times)

- Corey Kilgannon on the aging Frank Serpico, who spoke out against corruption in the New York Police Department

- Walt Bogdanich on mistakes made during radiation procedures

- C. J. Chivers on a Marine's encounter with a buried I.E.D. in Afghanistan