@1SeptemberMoon Woopsies. That last two I said aren't right. I don't think there was an episode where he was on mars except for The Waters of Mars, but I don't remember them having weird writing on their skin. Wait, were the marks like tally marks?
@RoseTyler14. mine is in David tennant the mother of mine episodes with Martha or anything with Donna or the ONE where he's on mars and that weird writing comes on peoples skin