The first of a short lived attempt to get a modern (1980s) paperback franchise out of a 1930s character by discarding just about everything from the original apart from the central characters' names.

Not badly written - though the writer* does forget from time to time the geography of the giant space ship that plays a central part of the book. There's lots of 'up' and 'down' and people throwing themselves to the floor of areas which were, on the previous page, weightless.

* (whoever they were, there is not an author's name credited anywhere that I can find on the book)