Tomorrow Hold on tight, team, because this one gets serious. It's 2017, in Chechnya, at the height of the epidemic that is ravaging the world. Cassie Railly is sending an international message to the world to find people immune to the disease, because it may be the key to creating a vaccine. Meanwhile, in 2043, Jones is addressing a rumor that's spreading through the compound – that Foster has found a cure. She explains that the virus keeps mutating and that the only way to solve the problem is to take Fosters core and fire up the splinter machine. Ramse, fearing the worst, tries to convince Elena and Sam to come back to the Temporal Facility with him. Elena says she's seen the cure work first hand, which runs counter to what Jones has been saying. So, whom do we believe?