Guest Starring John Noble

S3, E17: With the timeline barely stable, the Legends must tackle two anachronisms at the same time to try and keep Mallus at bay. Sara and Rip team up to stop Grodd (guest star DAVID SOBOLOV) from going after a particular target, leaving Nate and Wally (KEIYNAN LONSDALE) to stop Amaya from changing her future. Meanwhile, the Legends think they have found a way to destroy Mallus, but they will have to create an uneasy alliance with one of their enemies.