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All Seasons

Season 1

  • S01E01 Why Bridges Collapse: The Genoa Disaster

    • August 12, 2019
    • BBC Two

    The story of some of the people on the Polcevera Bridge on the day of its collapse, investigating what caused the bridge to fail so catastrophically.

  • S01E02 Why Ships Crash

    • January 18, 2022
    • BBC Two

    When the Ever Given blocked the Suez Canal, it triggered a global crisis. Featuring eyewitnesses speaking for the first time, this documentary aims to find out what really happened.

  • S01E03 Why Buildings Collapse

    • July 5, 2022
    • BBC Two

    In 2021, Champlain Towers South – an apartment building near Miami – collapsed, killing 98 people. This film forensically examines what happened and asks: what went wrong?

  • S01E04 Why Sharks Attack

    • July 18, 2023
    • BBC One

    After three recent fatal shark attacks in Egypt, this film investigates whether pressure from human activity and climate change is altering the behaviour of sharks.

  • S01E05 Why Planes Vanish: The Hunt for MH370

    • March 6, 2024
    • BBC One

    Ten years after Malaysia Airlines Flight MH370 and its 239 passengers and crew vanished, can new evidence help locate the plane and finally solve aviation’s greatest mystery?

  • S01E06 Why Trains Crash

    • July 18, 2024
    • BBC One

    On 2 June 2023, a triple-train crash killed nearly 300 people and injured more than 800 in India’s eastern Odisha state. This film examines what went wrong and explores the causes of train disasters.