Below are the promotional photos from all four episodes of the “Invasion!” crossover, airing this week. Supergirl’s episode is included below despite its role in the crossover being extremely minimal. Arrow’s photos are from the show’s 100th episode. Take a look below.
Supergirl 2×08: “Medusa” (Monday, 12th December)
The Flash 3×08: “Invasion!” (Tuesday, 13th December)
Arrow 5×08: “Invasion!” (Wednesday, 14th December)
Legends of Tomorrow 2×07: “Invasion!” (Thursday, 15th December)