Once in London, Holmes looks into the horror that is now Stonegrange. His investigations take him into a dangerous undercover assignment in search of a possible terror ring, though he cannot determine how a human agency could have caused the disaster. There, he works hard to pass as a recent immigrant and manual laborer from a certain rogue Mideastern nation as he attempts to uncover signs of the terrorists.
Meanwhile, alone in Colorado, Skye battles raging wildfires and tames a wild mustang stallion, all while believing her husband has abandoned her.
Who — or what — caused the horror in Stonegrange? Will Holmes find his way safely through the metaphorical minefield that is modern Middle Eastern politics? Will Skye subdue Smoky before she is seriously hurt? Will this predicament seriously damage — even destroy — the couple’s relationship? And can Holmes stop the terrorists before they unleash their outré weapon again?
