Volcano adventure

Hal and Roger Hunt are the brothers at the centre of this installment in a long-running run of adventure novels. Their work alongside Dr Dan Adams takes them to the Pacific, where he is studying volcanic activity. Things turn dangerous when Mount Myojin bursts into eruption. Dr Adams is acting oddly, and his conduct puts the whole group at risk as they try to escape a blast powerful enough to wipe out a city the size of New York.