Add thoughtful Elizabeth Elliot, clerk of the Cambridge (Mass.) Quaker Meeting House, to the roster of aging amateur sleuths. Here, the mid-60s Elizabeth finds herself in opposition to the police, who have incarcerated Tim, a homeless renegade, for the murder of wealthy John Hoffman just because Tim denounced Hoffman and his ethics at a Sunday Meeting of the Society of Friends. More to the point, Elizabeth thinks, is that Hoffman was planning to change his will; that his lawyer-nephew lied about it; and that someone stole Hoffman's journal--which outlined his plans and his new beliefs. Does the murder tie in, somehow, with the topic currently being debated by the Meeting--same-sex marriages? Gentle Elizabeth, who here must resort to housebreaking, eavesdropping, and lies of omission to further the plot, ultimately ekes out the truth by breaking an alibi--and with it any chance the Meeting had to profit from Hoffman's death. A somewhat stodgy, old-fashioned debut (characters wonder what will happen ``on the morrow''), but enhanced by descriptions of Quaker customs and philosophy. Introspective traditionalists will find much to mull over. A follow-up is in the works.