Revealing mistake: "Stop When Red Lights Flash": In the cell with Kate, Weston puts on his mask, making only his head visible. But the blue-screen matte used for this special effect is, weirdly, showing through his blue eyes. (00:23:40)
Revealing mistake: Many times throughout the series, the wires that hold up and control the models of the Eagles are easily seen.
Revealing mistake: Whenever Isis has to do jumps you can tell it's not her but a stunt double.