Will Murray's third Doc Savage novel is ... not good. Where his first, Python Isle, relied heavily on a Dent outline, here he's just using some Dent ideas and it's a lot less effective. The opening, where a man freaks out at images of fish, is an effective hook, but the confrontation with the villain is long and talky (admittedly Dent did a lot of talky Doc Savage novels in the post-war years). And the villain, Jonas Sown of "The Screaming Man," is one of Dent's most uninteresting and unconvincing evil geniuses.
This book is annoyingly sexist too. Dent had a lot of competent women in this book; here we have one whose role is to die saving Doc, another who's just plain obnoxious. It has more in common with the Destroyer series Murray used to write than Dent.