When TransOcean Flight 716 vanishes over the Atlantic Ocean with 256 people on board, crash investigator Kendra Malley is called in.

Kendra tries to make sense of conflicting evidence and is stunned by the betrayal of someone close to her, while AJ puts his life in danger.

After her wartime friend goes missing in London, Frankie must work with Agatha Christie to uncover the reason behind the disappearance.

Shock waves hit a Salvare struggling in the aftermath of an epic act of destruction. Niko questions William’s judgement as Erik looks to the Achaia.

The new planet holds promise — and unexpected threats in the brush. The tables turn as Richard reaches out to Iara. The Achaia open up to Erik.

On an expedition to a mysterious moon, Sasha attempts to make first contact with a second artifact as Niko and Cas get brutally honest with each other.

While Niko races against the clock to save her ship and crew, she remembers the first time she met Cas. Sasha fears his mental state is deteriorating.

Sarah blames herself when another disturbing murder occurs. Meanwhile Allison has mixed reactions to Dylan’s TV commentaries about the killings.