Mara taunts Nathan and Duke by telling them she has killed Audrey. They decide they only way to lower Mara's defenses is to bring her on a case. Thank goodness it's Haven and there is always a new trouble.

Keeping secrets from one another proves to be the cataylst as Vince and Dave then Gloria and Dwight all switch bodies with one another. We know that Dave hid from Vince that he was from the other side, but we don't know what Gloria and Dwight are hiding from one another. Yet.

As Vince and Dave continue to investigate Dave's past in North Carolina, they find a connection between his past and Haven. Once they identify who is causing this new trouble, Nathan goes to confront him, leaving Duke and Mara/Audrey behind.

Duke manages to bring Audrey back and they talk about their friendship, including the kiss that happened in Colorado. She asks him why he pulled back. He hesitates, then suddenly doubles over in pain. He and Nathan just switched bodies. Duke calls Nathan to warn him that Audrey is really Mara. She has been pretending the whole time.

Vince and Dave return to the address in Dave's adoption paperwork. Dave feels strange and discovers there is an open thingy and it wants him back.