Mark and Liz's Adventures in Africa, Part One begins a bold new chapter in the siblings' extraordinary voyages. After their journeys through Central and South America, Mark and Liz sit with their parents in Miami to decide their next destination. The answer: Africa—a land of vast challenges, mysteries, and dangers unlike anything they've faced before. But from the very beginning, things don't go smoothly. As the Mark and Liz sets sail, their old companion John suddenly reappears, desperate to join them. Mark distrusts him, but John forces his way aboard in dramatic fashion, nearly drowning in the attempt. With Anna also on board, tensions rise as the small crew prepares to face storms, gales, and the unforgiving Atlantic waters off Africa's southern coast. When a violent storm hits near Port Nolloth, Mark must take command, forcing Liz, Anna, and John to prove themselves—or perish in the gale. But dangers at sea are only the beginning. Hidden along the African coast are secrets, including the promise of diamonds, that will test their loyalty, courage, and judgment. This first part of their African saga marks a turning point: new companions, new dangers, and new treasures waiting to be uncovered.