Betty Haverhill leaves San Francisco on an Italian freighter bound for ports in El Salvador, Panama, Venezuela, Spain and Italy. Among the passengers is Mik Finsch, a mysterious man-of-the-world. Betty's mild flirtation with Mik ends in a fight and the suicide of one of the passengers. Another "suicide" leaves no doubt in Betty's mind that Finsch is a murderer, and soon she's fighting for her own life.
Used availability for Jack Vance's The Dark Ocean
December 2017 : USA Paperback
March 2012 : USA, Canada, UK Kindle edition