Just a Hopeless Ro-bo-mantic – "Dark Water/Death in Heaven" & "The Invasion"

Danny Pink: we hardly knew ye. Seriously. We didn't really ever get a chance to know you. But now you're gone! And you do go out with a bang. Plus, we finally see who the hell this Missy character is. Also: a half-great story from years past with all the trappings that Porter loves.