Continuing the adventures of Old West heroine Breanna Baylor, book six of the Angel of Mercy series begins with the wedding of Breanna and the legendary Stranger, whose true identity has now been revealed. Before the nuptials, their best man, Chief U.S. Marshal Solomon Duvall, disappears. After the ceremony, both John and Breanna--who has pledged Whither thou goest, I will go--put their own lives in danger as they set out to find him.