David Drake is a friend of mine. He's a good friend and a very good writer. I had read Master of the Cauldron at least once before. It was a engaging and an entertaining read. An old writer once told me that the secret of pulp fiction was "get a hero, get him in trouble, get him out." David Drake works a variation on that theme. He has four primary characters, the brother-sister pairs Garric and Sharina, and Cashel and Ilna. We start out in every book with the four friends (in the case of Sharina and Cashel, more than friends) together, moving into what seems a predictable future. In that case, they are arriving at the port of Erdin, main city of the island of Sandrakkan, to negotiate Earl Wilduf's relationship with the Kingdom of the Isles.
Various forces, natural and supernatural, separate our heroes. Each of the four gets into his or her own brand of trouble, and then gets out via a process that reassembles the team in the ruins of Erdin. Enemies vanquished, evil driven back, the Kingdom once more secure. Until the next adventure.
This is a series of nine substantial books, and well worth the time it takes to read the whole thing.