The Expanse's final season left fans hanging on all of its plotlines, but one mystery has been solved, with the fate of one character fully explained.

It's the best sci-fi TV series of the 21st century, but it took a risk that most shows of its ilk would avoid at all costs.

Amazon has picked up “The Expanse” for a fifth season. The announcement was made during the Television Critics Association summer press tour on Saturday. Season 4 of the series is set to debut on Dec.