Last week’s episode of DC’s Legends of Tomorrow, ‘Moonshot’, ended with the Legends retrieving the final piece of the Spear of Destiny. The Legion of Doom now wants nothing more than to get their hands on it. Now that they’ve lost Rip (Arthur Darvill), though, they’re bringing in one final member who might make Mick (Dominic Purcell) turn against his teammates.

The photo gallery for tonight’s episode shows the Legends in the midst of WWI (where they’ll meet one very famous fantasy author). We also see the long-awaited face off between two former partners in crime.

The trailer shows us that the stakes are higher and history’s in more danger than ever.

Arrowverse Crossover: "Crisis on Earth X"

How far will the Legends go to protect the Spear and how far will the Legion go to steal it? Find out tonight in ‘Fellowship of the Spear’ airing at 9/8c on The CW.