Day 2: 5:00 A.M.-6:00 A.M. - S2-E22
Other mistake: In the beginning of the episode when the show is starting and the credits are rolling, instead of Billy Burke the credit is shown as Billy Gurke.
Other mistake: For secret agents, Sydney and Dixon are not very dedicated to secret identities. At several points they refer to each other by their real names in front of other people while they are under aliases. Examples include The Confession party and The Coup Las Vegas scenes.
Injustice For All (2) - S1-E19
Other mistake: Unless he escaped prison, it makes no sense for Copperhead to be in the police van with the other Secret Society members. You can see him sitting there across from Solomon Grundy and The Shade.