Found by wife Chloe (Jessica Biel) – who has been victim to an onslaught of virtual abuse – the mystery around Adam's death remains until the very last episode of the series.

His son Ethan (Maxwell Acee Donovan) is the main suspect in the case but, although circumstances around his whereabouts remain questionable, did he do it?

With his biological mother and Chloe's sister Nicky (Elizabeth Banks) back on the scene, family tensions soon rise to the surface, especially when Chloe and Nicky are branded by the media as 'sister wives'.

But who actually killed Adam and how did The Better Sister end? Read on for a breakdown of the final episode of the series.

Having had a strained relationship with her son Ethan over the years, Nicky had secretly been in contact with Ethan for some time in a bid for him to get to know his biological mother.

When they were chatting one night, Ethan tells Nicky about what he's witnessed: his father physically assaulting Chloe. Clearly terrified by what his father was capable of, Ethan's admission scares Nicky, not least because she also suffered through years of abuse from Adam.