Ahead of tonight's episode of "12 Monkeys," Syfy has provided SPINOFF with an exclusive clip depicting the reunion between Cassandra (Amanda Schull) and her one-time love interest Aaron (Noah Bean).

It's a big moment, as Aaron was presumed to have died in a fire at the end of the sci-fi mystery's first season. "How is this possible?" Cassie asks. That's what viewers want to know!

"I'm not the enemy, Cass," he tells her, "and neither are they. We're all fighting the same war, just on different fronts."

Watch the emotional scene below. "12 Monkeys" airs Mondays at 9 p.m. ET/PT on Syfy.