He Bought a Hat

 is the fourth episode of the first season of the Netflix series The Diplomat.

Synopsis
As Rayburn's rep takes a hit, Kate drops in on Dennison's private meeting at the UK Foreign Office and learns startling information about the attack.

Main Cast

 * Keri Russell as Kate Wyler
 * Rufus Sewell as Hal Wyler
 * David Gyasi as Austin Dennison
 * Ali Ahn as Eidra Park
 * Rory Kinnear as Prime Minister Nicol Trowbridge
 * Ato Essandoh as Stuart Hayford

Supporting Cast

 * Jess Chanliau as Ronnie
 * Pearl Mackie as Alysse
 * Penny Downie as Frances Munning
 * Tim Delap as Byron
 * Kenichiro Thomson as Martin
 * Elijah Cook as Theo (CIA Officer)
 * Sharif Dorani as Parham Hajjar
 * Dana Haqjoo as Farid Namazi
 * Maggie Daniels as Louisa
 * Freddie Stabb as Lucinda
 * Tim Berrington as Tyler Randall
 * Louise Cole as Photographer
 * James Beaumont as Medic 1
 * Tomini Babs as Medic 2
 * Olivia Nita as Mitzka