"That was a Hypercube. It's a form of communication that Time Lords use to contact each other through time and space," the Doctor spoke as he circled the centre of the TARDIS, fiddling with the controls here and there. "My understanding is that a particular Time Lord from that reality sent his Hypercube through the gap between dimensions in the hope of encountering one of the infinite versions of me that are spread throughout realities."<br/><br/>"As for who he was..." the Doctor began before smiling at Robin. "That can wait, I would rather surprise you later one, besides, we have three days before we have to deal with the unbelievably horrible things that are happening to make a gate in reality open up."<br/><br/>"More importantly, how is the beeping inside your head, had it gotten any better? The signal of the Hypercube breaching that gap should have eased off your head and made it a little more bearable," the Doctor asked whilst turning a dial on the control board. "Also, are you going to stand around in my anorak all day or are you going to finally go and get changed? There's plenty of clothes down in the wardrobe section of my TARDIS."