Nick King, ship owners' agent, receives a mysterious blood-stained package through the mail, with a terse note asking him to deliver it to a third officer Svenson - who turns out to be an attrac- tive female officer on a Norwegian ship. The parcel contains a model ship in a bottle, sent by her uncle who collects model ships. King's suspicions about the innocent looking model are confirmed when Aline Svenson is offered a large sum of money for the bottle and then finds her uncle murdered.
