Continuity mistake: Maggie says she was born in 1959, but her mother was committed to the asylum in November 1958, when her daughter was eight months old.
Judge, Jury & Executioner - S2-E7
Continuity mistake: At the beginning of the scene where Allison and D.A. Devalos are talking right outside his office, the office door is ajar. During the scene it's closed, and by the end, it's ajar again. Neither character touched the door.
Still Life - S2-E9
Continuity mistake: At the beginning of the episode, Van Gogh starts painting blue circles "on" our TV screen (this is the 3D episode). The three circles are big and touch each other. Next shot, seen from a standard point of view, you see him getting back up and the canvas is still on the floor: the circles are smaller and quite far apart.
Still Life - S2-E9
Continuity mistake: In the scene where the DA and the deputy mayor are talking outside the DA's office (after she is found sitting in his office with the artist's dad), the deputy mayor closes the door when they exit the office. In the following conversation, the door is ajar.