In the First World War, men on horseback with swords fight against an emerging modern weapon, the machine gun. In Northern France, on the site of a cavalry charge into the face of relentless machine gun fire, the Trench Detectives discover evidence of a desperate act of bravery that stopped the German advance in the Spring of 1918, but decimated the ranks of a Canadian cavalry unit. It was the last great cavalry charge of the First World War, and it was made by Canadian soldiers.
In the second episode, the Trench Detectives discover the shattered remnants of a tank in French woodlands and try to trace its identity.
In the third episode, experts hope that a pair of matching wedding rings, found on an unknown soldier that fell on the Western Front in 1915, will help them identify the body.
In this episode, the team trace the history of a Canadian orphan.
The Trench Detectives dig into the past of a picturesque French hunting lodge, which was a silent witness to the war, to reveal its troubled history.
In this episode, the Trench Detectives attempt to discover what happened to a signaller who was stationed near a village in Belgium.
The Trench Detectives uncover the story of a civilian gravedigger serving on the Western Front, whose greatest fear was being buried alive.
The Trench Detectives try to identify the remains of an Argyll and Sutherland Highlander, who fell in September 1915 during the first massive Allied attack on the German positions at Loos, Belgium.