When two fuselages became wartime answers to impossible aerial threats.
Explore the bold design logic behind twin-fuselage aircraft, from Britain’s response to Zeppelin raids in World War I to German and Allied experiments in World War II. This film reveals how engineers adapted existing planes for range, towing power, and escort missions, turning urgent wartime problems into some of aviation’s strangest machines. Learn why these rare designs still fascinate.
Love Deadly Twins? It’s just the start.
Join now to unlock the whole library — thousands of award-winning documentaries beyond Deadly Twins, from the deep ocean to deep space.
Trending Now
- New shows weeklyFresh documentaries land every week.
- Exclusive originalsAward-winning films you can’t stream anywhere else.
- Watch anywherePhone, tablet, web and TV — pick up where you left off.
- No commitmentNo contract. Cancel in a click.
Pick the plan that’s right for you.
Flexible plans, no contracts.
Thousands of documentaries across nature, history, space, and science.
- Watch in 4K on all your devices
- Download and watch offline
- Stream ad-free — cancel anytime
Thousands of documentaries across nature, history, space, and science.
- Up to 4K
- Offline downloads
- Ad-free
Frequently asked questions
Yes. Every plan unlocks the full library — including all Curiosity Originals like Deadly Twins — in up to 4K, ad-free, on all your devices.
Deadly Twins is a Curiosity Original, exclusive to Curiosity Stream. Plans start at $4.17/month.
Watch on the web, iOS and Android, Roku, Apple TV, Amazon Fire TV, Chromecast, Android TV, and most smart TVs. Start on one device and pick up right where you left off on another.
Curiosity Stream is our streaming service — thousands of documentaries and originals. The Smart Bundle is Curiosity Stream plus four other independent streaming services (Tastemade, Kidstream, Curiosity University, and SOMM TV) on a single subscription.