That Old Gang of Mine - S3-E10
Revealing mistake: When Max is scaling the wall into the palace, in one shot he is a visible stunt double.
That Old Gang of Mine - S3-E10
Visible crew/equipment: When the Turk is breaking into the palace, he pushes the window and it just swings open, since it is unlocked. However, you can see hands belonging to a crew member pulling the windows open to make way for the gag.