Erica Messer is an American television writer, producer and story editor. She has written episodes of television series such as Alias, The O.C., Charmed and Criminal Minds. She has also co-produced two television shows: Charmed and Criminal Minds, as well as acting as a story editor on Alias and executive story editor on The O.C. She Will Also Be Writing 12 Of the 32 Episodes Of 'CSI:London' Season 6 That Will Air In The UK Next Year.