When she rescues her friend, a staunch environmentalist trying to save an endangered species, from a burning boat, homicide detective Hannah Sampson believes that the explosion had not been an accident and dives in to catch a killer b...

Hannah Sampson, head of Denver's Dive and Recovery Team, submerges herself in the turquoise waters off of the British Virgin Islands to investigate the death of the Denver police commissioner's son, an expert diver and researcher whos...