9 Things to Remember About 'Crisis on Infinite Earths' Before the Final 2 Episodes (PHOTOS)

Meredith Jacobs

The epic "Crisis on Infinite Earths" crossover concludes with Arrow and Legends of Tomorrow's episodes on Tuesday, January 14, and if you've forgotten any of the key details from the first three episodes, we have you covered. After all, they aired nearly a month ago.

The Arrowverse had been building up to the event for years — just think about that newspaper headline on The Flash — and it's almost time to see just how much is changed when it's all over.

The Arrowverse Joins Forces in 'Crisis on Infinite Earths' (PHOTOS)See Also

The Arrowverse Joins Forces in 'Crisis on Infinite Earths' (PHOTOS)

The five part event brings together the heroes of 'Arrow,' 'The Flash, 'Supergirl, 'Legends of Tomorrow,' 'Batwoman,' and more.

Click through the gallery above for the details you need to know before "Crisis" returns.

Arrowverse "Crisis on Infinite Earths" Crossover, Tuesday, January 14, 8/7c, The CW