Three-episode crossover event featuring DC superheroes from 'Arrow', 'The Flash' and 'Supergirl'.
On Earth-1, an alteration to their timeline causes Oliver Queen (Stephen Amell) and Barry Allen (Grant Gustin) to switch bodies.
After being locked up in S.T.A.R. Labs, the duo travel to Earth-38 in search of answers and enlist the help of Supergirl (Melissa Benoist) before heading to Gotham City to restore reality.
- Format: DVD
- Region: 2
- Certification: (12)
- EAN: 5051892223256
- Catalogue number: 1000746135
- Studio: Warner Bros. Home Ent.
- Release date: 26/08/2019
- Genre: Drama
- Colour: Colour
- Paperback / softback from £14.25