When a priest confesses to the murder of a parishioner, everyone in the wealthy waterfront town of Pequot Bays is convinced of his guilt-everyone, that is, except Marya Cook, a Bible-quoting, lavender-clad octogenarian known to locals as the Purple Pest. Unable to prove his innocence on her own, she draws in Martha Collins, a much younger, efficient, ever-busy church lady, to assist in her investigations. Although Martha is unwilling...