The Lusitania was built by John Brown and Company of Clydebank, and was launched in 1906. She was the first British ship to have four funnels, the first steamer with quadruple propellers, and the first ship to exceed 30,000 tons. Such was her size that substantial modifications needed to be made to accommodate her at the Liverpool Landing Stage. The Lusitania made her maiden voyage from Liverpool to New York on 7th September 1907. At that time the Lusitania was the largest ship in the world. At the outbreak of World War 1, the Lusitania was at sea but arrived home safely. Sailing between Liverpool and New York however, disaster struck on 7th May 1915, when the Lusitania was torpedoed by the German submarine U-20, as she made her way off the Old Head Of Kinsal, Ireland. U-20 had struck without warning and Lusitania sank within 18 minutes. Of those on board, 1, 198 were killed and 761 were rescued. This programme explores the history of the ship, the attempts to shed new light on the intrigue and mystery surrounding the second explosion.