The Good Friday Murder (Christine Bennett Series #1)

Christine Bennett has left the cloistered world of nuns for the profane world of New York State, where murder and madness are often linked. At a town meeting, Christine volunteers to investigate a forty-year-old murder case long since closed. Now she'll move heaven and earth to exonerate a pair of retarded savant twins, now senior citizens, of their mother's murder on Good Friday in 1950.