Only in Central City can you run into a familiar face and want to keep running.

In this exclusive clip from tonight's episode of The Flash, Cisco (Carlos Valdes) and his brother Dante (Nicolas Gonzalez) cross paths with Rupture, an Earth-2 villain who has an axe—or actually, a scythe—to grind with one of the guys for a tragedy they may or may not have had a hand in over in his home timeline.

Of course, even in times of peril, our Cisco is quick with the wit, tossing off a Princess Bride joke at the approaching evil-doer, who then reveals his ties to both of the boys.

Obviously, Cisco is going to need to explain a lot to his flabbergasted bro... If he survives, that is.

The Flash, Tuesdays, 8/7c, The CW.