Extremely soapy... I would have liked this much more if the entire premise wasn't so flimsy.
CAUTION: The Other Side of Midnight SPOILERS BELOW.
In retrospect, this would have been 100% better if Catherine Alexander had either been killed or permanently an amnesiac at the end of the first book, The Other Side of Midnight. This sequel follows the secondary antagonist from the first novel, Costa Demiris, as he pursues a rather circuitous journey of revenge against Noelle Page and Larry Douglas - the two people he killed via scheming in the first novel, by taking his fury out on Catherine.
Huh?
Catherine awakens in a convent. Over time, her nightmares seem to reveal clues to her mysterious, pre-amnesia past. The Mother Superior reaches out to Catherine's benefactor to inform him that she wishes to leave and investigate her past. He meets with Catherine and reveals she was married to his former pilot, Larry Douglas. Out of a sense of obligation to his employee, Costa has been anonymously providing for her room, board and medical expenses at the convent. Catherine leaves feeling she's got at least one friend in her strange new life, and she sets out to explore the streets of Athens.
The rest of the book goes into Consta's humble entry into the oil industry, gleaning his rivals' secrets by sleeping with their wives and eventually marrying the sister of one of his worst enemies. As Costa ages, we see him sink into complicated schemes of corporate sabotage and murder. Following the same storytelling pattern from TOSoM by weaving one criminal foray into the next, the storyline inevitably keeps returning to Catherine. Costa's master plan is to draw her into his life, sleep with her at lot, and then murder her. In this way, he'll do to Larry (the dead guy) what Larry did with Noelle (Costa's dead girlfriend), and then his plan for vengeance will be complete!
The whole thing kept reminding me of that scene between Dr. Evil and Scott where he places Austin Powers in "an easily escapable situation involving an overly elaborate and exotic death." See, the thing is that Costa saved Catherine at the end of the first book, because she was innocent. In Memories of Midnight, he sets out to kill her right from the start because she's a liability.
The whole thing makes no sense, but at least there's a satisfying series of comeuppances going into the big climax - which is also the very last sentence of the novel. It was an interesting choice by the author, but I wasn't a fan.
All in all, I wish I'd stopped after the first novel, which was delicious.