[s4e4] In His Majesty's Secret Service Guide

Mark Thatcher goes missing, causing Margaret Thatcher to break her professional composure.

Mark is found safe, and Elizabeth reflects on her failings as a mother. 🎭 Cast & Characters Olivia Colman: Queen Elizabeth II Gillian Anderson: Margaret Thatcher Josh O'Connor: Prince Charles Erin Doherty: Princess Anne Tobias Menzies: Prince Philip [S4E4] In His Majesty's Secret Service

Margaret Thatcher struggles with her son Mark going missing in the Sahara during the Paris-Dakar Rally. Mark Thatcher goes missing, causing Margaret Thatcher to

Queen Elizabeth II meets with each of her four children to assess their happiness and success. Mark Thatcher goes missing