The Dark Triangle

A plane carrying both the United Kingdom Prime Minister and United States President goes missing over the Bermuda Triangle. Chris Godfrey and company investigate and are captured by strange creatures. The plane carrying the UK Prime Minister and the US President has disappeared while flying over the Bermuda Triangle. Our four friends, together with young Sue Howard, who has become attached to Chris since their meeting in Guernsey (in The Blue Aura ) venture into the Triangle by boat, and are captured by a strange creatures who resemble walking dolphins, called Sembrians, who plan to use them for vivisection...