Pretty — Little Liars: Original Sin S01e10 Final ...

Just as things seem peaceful, Archie escapes police custody. He murders Chip in a gruesome fashion before heading toward the girls' homes, proving that while the "Original Sin" mystery is solved, the slasher is still on the loose.

"Final Girl" effectively transitions the franchise from a teen soap-mystery into a legitimate horror-slasher. It ties up the 1999 mystery while leaving enough blood on the floor to fuel the second season, Summer School . Pretty Little Liars: Original Sin S01E10 FINAL ...

Clanton gathers the mothers at the school to force a confession. Just as things seem peaceful, Archie escapes police custody