The government has introduced jurors to women supposedly targeted by a New York police officer accused in a cannibalism plot, but their lack of knowledge of any sinister plans provided an opening for the defense to highlight claims that it was all fantasy.

Elizabeth Sauer, 29, of Germantown, Md., was called as a government witness Tuesday against 28-year-old Officer Gilberto Valle on the second day of his trial on charges that he conspired to kidnap, kill and eat women he had described in chats on a fetish website.