The plot follows the structure of a typical NUMA novel. Fans will have a general idea of what I mean, but I won’t spoil it for you if you’re a first time reader. Dirk Pitt is married to long time friend Loren and heads NUMA. The Navy is working on a submarine prototype called Sea Arrow that is generations ahead of the current technology. As expected, the bad men are after it. The Sea Arrow’s scientist disappears under fishy circumstances and NUMA is pulled in to help. There is a shortage in rare metals that might be orchestrated by someone in South America. Dirk and Al haven’t slowed down and perform their usual daredevil maneuvers. Dirk Jr. and Summer find a wreck or two and have their own share of misadventures. Poseidon’s Arrow provides the expected thrills for Cussler fans. Yes, he makes his usual cameo appearance.
Have you ever noticed how later books in a series seem tame compared to earlier ones. Is it because it has all been said before? Or is it because you just get used to a certain plot and expect more each time? For example, I remember earlier Dirk Pitt books like Flood Tide as spine chilling. The villain in Poseidon’s Arrow seems tame by comparison. I could not detect much of a difference in the writing considering that this is a co-authored book. All said, this is an interesting read for Dirk Pitt fans.