Continuity mistake: When Daniel Stern takes Capt. Bosch down to the sewer area for the first time, the sweat, oil and dirt stains on his tank-top change constantly. This is most noticeable when they first descend into the cellar, where the shirt looks almost perfectly clean after being extremely dirty just a split second before as they start to climb down. Also, a little later, there's all of the sudden an enormous sweat stain on his chest that disappears later.
Continuity mistake: AJ took the pistol from Bosch and shot Wilson to stop him. As AJ comforts a wounded Bosch, the pistol is suddenly back in Bosch's belt before AJ gets there.
Continuity mistake: The front tag on the cop car that Lauren steals is hung correctly. As she approaches the crowd, it's askew.