A Dark Day (I) S20E20 - A Dark Day (I) 2014
Lt. Casey and Dawson volunteer to help at a charity run at Chicago Medical when a massive explosion sends Chicago into chaos. With one of their own missing in the blast, the firehouse is tested like never before. The crossover continues on Chicago P.D. S01E12 8:30 PM (II)
- Released: 2014-04-29
- Runtime: 50 minutes
- Genre:
- Stars: Jesse Spencer, Taylor Kinney, Monica Raymund, Lauren German, Charlie Barnett, David Eigenberg, Yuriy Sardarov, Joe Miñoso, Christian Stolte, Eamonn Walker
- Director: Joe Chappelle