In the past seventeen years, Nancy Drew has made a late but commercially successful transition from long-running book series to digital mystery-adventure games. games have adapted the famous Nancy Drew formula into 'interactive fiction', empowering players to conduct the investigation. The book Secrets Can Kill puts Nancy back in high school, undercover as a transfer student, to find a vandal at a school fifteen miles from River Heights. Ironically, the series is filled with gendered play activities for girls. Instead of revising the plot of Secrets Can Kill to eliminate these verboten elements, Her Interactive only changed the ending and left the rest of the game intact. The company's first attempt is based on the best-selling Nancy Drew book of all time, the 1965 revised version of The Secret of Shadow Ranch; according to Publisher's Weekly, it ranks number 50 on its list of best-selling children's hardbacks,34 a position it richly deserves.