Sigrid Carter's life story is worthy of becoming a movie. This was true before she even turned thirty. As an adventurous girl in her twenties, she and three girlfriends from Germany trekked from Colorado to the Pacific coast of Panama, where the group of friends took a canoe into the ocean, got lost, and found themselves surrounded by sharks, just as bad weather set in. Somehow, they survived. The tide carried them to the shores of Columbia, where...