Sixfold SerendipityEpisode 28

Six years ago, Zoe Judd orchestrated a plan for Lia Judd to sleep with another man. However, when she discovered that Lia had instead ended up with Ben Lowe, who had been drugged by his grandfather, Zoe took advantage of the situation and replaced Lia, staying with Ben for six years. After managing to escape, Lia gave birth to sextuplets, one of whom was born with a congenital condition.