In a Word: Professor Fina agrees to help Bo and Rex return to 2008, while Gigi asks Delphina to transport her to 1968.

The Action: In 1968, Rex notices the striking similarity between Prof. Fina and Delphina (both played by Lea DeLaria), when Bo returns with Emma hollering behind him: You can't dump a girl, then try to sleep with her! Rex is relieved Bo didn't sleep with Emma (Gigi) but starts to panic, realizing that if David Vickers is never conceived, they'll be stuck in 1968 forever.

Bo doesn't know what else to do, but Rex has an idea: Call Prof. Fina. Turns out Prof. Fina is as quirky as Delphina is flighty. And looking a bit like Colonel Mustard. He's delighted to meet actual time travelers and agrees to help them. Bo and Rex are dubious, but what do they have to lose?

At Rodi's, Gigi feels the same way when confronted by Delphina, who reveals she can help Gigi find Rex, but at a price. Gigi doesn't have extra cash lying around, and the idea of Rex being in the past sounds like a scam, so she snubs Delphina ... until Delphina mentions "Hamburger Hill" and "1986." Gigi makes the connection: Hamburger Hill was a battle in Vietnam, which Rex had mentioned, and 1986 is 1968 transposed. She returns to Delphina's table and asks her to get her back to 1968. We wonder if Gigi has to be electrocuted to travel in time.