German Chancellor Angela Merkel works on her poker face; Jerry Hall-Murdoch looks to apply financial lessons from her previous marriage to her new one; British Prime Minister Theresa May struggles to have a stern conversation with President Trump via video chat; French First Lady Brigitte Macron recalls the good old days; Camilla Parker Bowles has unexpected adventures in babysitting; contestants from ”The Great British Bake Off” get serious with cake creations based on their dreams; and the show looks at the latest virtual-assistant incarnations.