Lovely, Dark and Deep (The Madeline Mann Mysteries)
by Buckley, Julia
Madeline Mann is back in her second mystery only months after solving her first. This time she is asked to investigate the death of a young nun named Sister Joanna Yardley. Madeline's old English teacher, Sister Moira, thinks the death may have been murder, and she wants Madeline to use her detecting skills to find out the truth about Joanna; in the process, Madeline finds that danger still lurks in the small town of Webley.