Warning: If you don't want to know what happened in this episode, don't read this photo recap!
When Nathan pushes Dave to remember what he can about Charlotte's death, he doesn't get very far. Dave does however make a connection to the past—another instance when he lost time and woke up in 1983 next to the body of the Colorado Kid, Lucy and Nathan's son. One of the only details Dave recalls from that day on the beach, is that a mystery woman escaped into a thinnie. This gives Nathan the idea to travel back in time, with Vince in tow, to figure out what exactly happened and how the woman was able to create a thinny, which they cant seem to find in present day. A thinny equals access into The Void and access into The Void means they can get their hands on the controller, the missing piece they need to build the new Barn.
Nathan and Vince hitch a ride back to 1983 by using their favorite human time machine, Stuart Mosley, who whenever he sees Nathan and a particular family portrait, gets agitated and transports anyone standing in front of him back to the particular time era they just mentioned.
Nathan warns Vince to stay away from the 1983 version of Dave so as not to disrupt the future timeline, but of course Vince disobeys. He tries to save younger Dave by pretending to be a literary agent who can offer Dave an out of town writing assignment. When Dave doesn't take the bait and realizes that he's talking to the future version of his brother (we wonder if it was Vince's face hiding under his hat's "disguise" is what have it away), Vince tells Dave the whole story, complete with the part about Dave being possessed later on in the day by Croatoan if he doesn't get out of town, now!
Meanwhile, Nathan tries to confront Barbara Colton and it doesn't go well. But, before she hightails it into a thinny, Nathan figures out how Barabara's been able to create thinnies in the first place. It seems that she's been using a combination of her Trouble along with the power of the ring she stole from Lucy, one of the three rings from Charlotte and Mara's time that allows them to escape into The Void.
Before Nathan can trail Barbara, he encounters his dad, Chief Garland Wuornos, who knows that the alias Nathan gave him earlier, "Nathan Butterworth, is fake. Butterworth is a fake name? No, really Garland, what makes you say that? But we digress. Once Nathan explains to his father who he really is and Garland confirms by pricking Nathan on the neck and he doesn't feel anything, the two have something of a bonding moment. Then, Garland tells Nathan that the Troubles could end forever if Lucy kills the one she really loves, her son James.
Lucy overhears the Wuornos men's conversation and decides to kill her son, who she's crazy close to, if it'll mean saving future generations of Havennites from the Troubles, which she feels responsible for. But before she can pull the trigger, Nathan shows up and tells her everything: He's from the future, he's James' father and Lucy can't be the one to kill their son, Dave has to.
And speaking of Dave. Despite a stern and pretty fair warning from Vince, Dave decides that he wants to take Croatoan head on. This sounds really noble and all, but of course things don't go as planned. Barbara Colton shows up on the beach and creates a thinny to hop into to escape Garland Wuornos who's hot on her trail. She hops out on the other side but the thinny stays open long enough to pull Dave through. When he comes out, he's fully possessed by Croatoan, kills Lucy and Nathan's son and erases the memories of everyone on the beach that day. Everyone lost time, which is why the details of the Colorado Kid's (James) murder are always foggy to those who were there. Though it's been a harrowing experience for Lucy and Nathan to watch, the ordeal gave Nathan the insight on how to re-enter The Void and it involves getting Duke's help.
Duke is being held captive in a seedy (yet beautifully lit) hotel room by some thugs who are waiting for "The Boss" to arrive. If this were a mob movie, Duke would be sleeping with the fishes by the end of the credits, but it's only an hour-long TV show and there's no time for that type of plot twist.
Instead, The Boss, is actually Saul Goodwin, a little boy Duke used to steal from and bully when they were kids back in Haven. But Saul's not here on revenge. Instead, Saul is making good on a promise he made back in 1983 to agent "Nathan Butterworth", to deliver a very important letter to Duke in the future, when the time came. The letter told Duke that in order to get back into The Void to retrieve the controller that could help them build a Barn of epic proportions and end the Troubles once and for all, they need a relative of the Colton family to create a thinny Nathan can escape into to complete the mission. The last surviving member of the Colton clan is none other than Hailie Colton, and Duke is now tasked with bringing her back to Haven to save them all.