Mystery solved, folks! After last season's jam-packed finale, "Echo Ridge," Colter Shaw (Justin Hartley) finally returned home on this week's Tracker for the full truth behind his father's death. Since the very first episode, Ashton Shaw's (Lee Tergesen) murder has been at the forefront of speculation, but it's not until now that we fully understand the events leading up to his strange death that stormy night in Northern California. "Chrono Stasis" reveals the full turn of events and opens the door for a much bigger threat going into Season 4 — depending on how the next episode turns out, anyway.