Alfonso Herrera as Ramón Mercader

Hannah Murray as Sylvia Ageloff

Henry Goodman as Trotsky

Julian Sands as Kotov

Elvira Mínguez as Caridad Mercader

Emilio Echevarría as Salazar

Frances Barber as Natalia Sedova

Alejandro Calva as Siqueiros

Roger Casamajor as Carles Vidal

Javier Godino as Costa

Toby Harper as Robins

Alexander Holtmann as Sheldon

Brontis Jodorowsky as Otto

Gustavo Sánchez Parra as Balderas

Humberto Busto as Homero

Jenny Beacraft as Ruby Weill

Juan Carlos Remolina as Estrada

Guillermo Ríos as 'El Negro'

David Hevia as Herrera

Javier Molina as Rosell

Peter Nikolas as Pablo

Lucas Anaya as Sieva

Ainhoa García Forcada as Carmen

Carlos Corona as Man in Hat

Alondra Hidalgo as Amparo

Fermín Martínez as Sergeant

Gilberto Barraza as Uniformed Man A

Evaristo Valverde as Sergeant Commander

Memo Villegas as Uniformed Commander

Algis Arlauskas as General

Jaime Estrada as Cabaret Waiter

Víctor Benjumea as GPU Interrogator

Xavier Ruano as GPU Man

Mykola Doroshenko as Soviet Field Marshal #1

Darko Pilipovic as Soviet Field Marshal #2

Colin Morgan as Comtesse Waiter

Peter Theis as Schnautz

Aleh Khaliankou as GPU Instructor

Raúl Briones as Melquíades

Tania Olhovich as Trotsky's Secretary

Luis Miguel Costero L. as Hansen

Camilla Brett as Greta

Enrique Greiner as Cooper

Marcia Seeman as Helen

Gastón Yanes as Leopoldo Rosmer

Ramón Madaula as Narrator (voice)

Daniel Giménez Cacho as Narrator (voice)

Vladimir Lenin as Himself - Politician (archive footage)

Leon Trotsky as Himself - Politician (archive footage)

Joseph Stalin as Himself - Politician (archive footage)

Natalia Sedova as Herself - Trotsky's Wife (archive footage)