Starring: Alastair Duncan, Rino Romano, Evan Sabara
Topsy Turvy - S1-E10
Continuity mistake: When we see Alfred in the Batcave, he had 4 neat piles of playing cards and turns over an Ace. When Batman arrives, there's a shot of the cards, but the Ace is no longer turned over. When he makes the comment about seeing another playing card, the shot changes and there's now 5 piles but not in a neat pile.
Factual error: In s01e08, "Q and A", when Yelena is playing chess, we see her use the touchscreen which represents the chessboard. However, the bottom left corner is a white square when it should be a dark square. The board is orientated incorrectly, even though the board on the floor isn't.
The Joker: Sorry Batman, but Joker always laughs last.