Summit is the fifteenth episode of the second season of Designated Survivor and the thirty-sixth episode overall. It aired on March 21, 2018.
With Ellenor confirmed as the new vice president, tensions including a nuclear missile test compel Kirkman to speed up a peace summit between East and West Hun Chiu at Camp David, but incessant leaks threaten to torpedo the talks---especially when the son of East Hun Chiu's ruthless strongman defects to the U.S. While Seth and Emily concurrently continue re-assessing their relationship as both are compelled to sign White House disclosure documents covering it, Kirkman is quietly outraged when he discovers the source of the leaks.
- Kiefer Sutherland as Tom Kirkman
- Natascha McElhone as Alex Kirkman
- Paulo Costanzo as Lyor Boone
- Adan Canto as Aaron Shore
- Italia Ricci as Emily Rhodes
- LaMonica Garrett as Mike Ritter
- Zoe McLellan as Kendra Daynes
- Ben Larson as Damian Rennett
- Kal Penn as Seth Wright
- Maggie Q as Hannah Wells