CING's Again (once known as Again: Eye of Providence) is just the latest in a surprising bumper crop of DS mystery adventure games, joining peers like the Phoenix Wright series, Jake Hunter, Miami Law, and the developer's own Hotel Dusk. The Tecmo-published Again brings a couple of unique quirks to the genre, while not straying too far from the sort of "visual novel" gameplay we've come to expect from these titles.
Again stars a pair of FBI investigators, Jonathan "J" Weaver and Kate Hathaway, as they investigate an apparent serial killer. The murders they are looking into happen to share characteristics with an unsolved serial killer case from 19 years ago, with which J was also involved -- as seen in subtle clues like the note written to J telling him that what happened 19 years ago is going to happen again. Most law enforcement officials would probably call an agent's personal involvement in a case a conflict of interest -- CING would call it drama.