Ex-FBI agent Brigid Quinn, now happily settled in Tucson, doesn’t go back to visit her family in Florida much. But her former partner Laura Coleman, whose life she has saved and who saved her life, is living there now. When Laura calls about a case that is not going well, Brigid doesn’t hesitate to get on a plane.

On leave from the Bureau, Laura has been volunteering for a legal group that is trying to prove the innocence of a man who is on death row for killing his family. Laura is firmly convinced that he didn’t do it, while Brigid isn’t so sure—but the date for his execution is coming up so quickly that she shares Laura’s fear that any evidence absolving him from the crime may come too late.