Murder Cruises the Antilles

A luxury cruise through the Antilles hosts a large political forum involving most of its vacationing passengers. Soon the political forum becomes fractious due to acrimony over restoring relations with Cuba.
When a dissenting delegate is found stabbed in the back near the forum rostrum, two detectives--one a petite blonde from the cruise line, the other the inimitable Jan Kokk--begin hunting the killer among the now terrorized passengers.
By the time the cruise ship reaches Curacao, Kokks home, a second passenger has been murdered and a female almost thrown overboard by the murderer. The two detectives succeed in identifying the killer but not until the fetching lady detective teaches Kokk a lesson in sleuthing--and romancing.