What happens when vows of “until death do us part” mean murder?

 First, a mother is found strangled and burned to death in her home. Suspicion falls on her estranged husband. But was there another person involved? Before it was over, lovers would betray each other in a most public way.

Then, a woman’s search for her missing sister reveals a startling secret: there was another missing “Mrs. Smith” twenty years earlier. Could a third be in danger?

And, a wealthy couple goes for an afternoon of boating. But only one returns. Was it an accident, or murder? And was their lavish lifestyle hiding secret troubles?