Continuity mistake: Dresden is missing, and Murphy comes to his office for clues. The right side window shade on the front door is pulled all the way down, and still is when Murphy leaves. But when she returns with a rescued Dresden at the end, the right door shade is halfway up, even though no one has been there to raise it.
Continuity mistake: As Harry talks to Murphy from inside the jail cell, his arms are wrapped around two bars with a third bar in the center. When the shot cuts to a wider angle, his arms are no longer draped through the bars: he's instantly standing straighter and holding onto the center bar with both hands. When it cuts back, he's in his original position again.