Soon On Netflix.com

After a brutal virus wipes out most of the population, two young siblings embark on a perilous search for safety. A Scandinavian thriller series.

Based on the Pretty Little Liars series of young adult novels by Sara Shepard, the series follows the lives of four girls — Spencer, Hanna, Aria, and Emily — whose clique falls apart after the disappearance of their queen bee, Alison. One year later, they begin receiving messages from someone using the name "A" who threatens to expose their secrets — including long-hidden ones they thought only Alison knew.

When teen siblings Hayley and Alex enter an elite boarding school, they find rivalry, romance and a mystery related to the recent loss of their mom.