Who killed the too-talkative teacher . . . ?

As the chair of a team sent to evaluate the faltering Rye Manor School for Girls, Maggie Detweiler expects to be as welcome as a case of Ebola virus. Yet upon the groups arrival on campus, no one seems keener for all to go well than Florence Meagher, a star teacher who is loved and respected despite her affliction- she can’t stop talking.

The following morning, Florence fails to show up for class and her husband seems more annoyed than alarmed at her disappearance. Florence’s sister, however, is distraught. There have been tensions in the marriage, and during their last visit, Florence had warned, “If anything happens to me, don’t assume it’s an accident.” Two days later, Florence’s body is found in the campus swimming pool.