"Dam Breakthrough" is the twelfth episode of the second season of Scorpion, and the thirty fourth of the series overall. It aired on December 14, 2015.
On Christmas Eve, Team Scorpion must prevent a catastrophe when torrential rains create a large crack in a dam, threatening to wipe out an entire town in its wake.
- Elyes Gabel as Walter O'Brien
- Katharine McPhee as Paige Dineen
- Robert Patrick as Cabe Gallo
- Eddie Kaye Thomas as Toby Curtis
- Jadyn Wong as Happy Quinn
- Ari Stidham as Sylvester Dodd