Johanna Lindsey's books...simliarities?

Okay, so I've only read two of her books, but I'm on a third one. The two that I've read are "A Man to Call My Own" and "Marriage Most Scandalous" ...my question to YOU is do you see how similar they are? Girl gets seduced, people get "murdered", and when everything is seeming to go right down the drain the person that "got murdered" miraculously comes in to play and fills in all the gaps and then happily ever after. Don't get me wrong, I LOVE the books and it's pretty much the way I would write if I was an author, but they are extremely similar. Are they all like this or was this just rotten luck that I picked these two books?