Another wild Irish adventure by a master follows young Kevin O'Connor of Galways on a stealthy to thundering round of deeds in high spirited, first person narration. The time is 1853 and Kevin and his mother are typical of the tenant farmers suffering from the evils of subletting, in this case, from Lord Wedcomb who is a far sterner landlord than his father. Defeated in a small rebellion, Kevin escapes to the mountain where the Foggy Dew, a valuable black opal, was last seen. Being the seventh son of a seventh son, Kevin has hope of finding the gem but he is a good distance from Ireland before he does. His adventures are as credible as they are fanciful and they lead to the amelioration of Wedcomb's land policy so that the O'Connor's future is safe and bright. Color, breathless suspense, good vigorously battling evil, are Wibberley's fortes, here as elsewhere.