無聲的證言第四季是由Mike Barker 執導，William Gaminara 湯姆·沃德 艾米莉婭·福克斯 主演的一部歐美劇。主要講述了：A private jet crashes into meijubar.net woodland outside London. Among the passengers is a former U.A private jet crashes into meijubar.net woodland outside London. Among the passengers is a former U.S. Ambassador. Thomas investigates the apparent suicide of a successful businessman, finding unexpected connections to the plane crash.