Which two Doctors met in " Time Crash " ?
It has been suggested in fandom that the Time Lords erase the Doctor 's memory after such encounters ( and in " The Two Doctors " there is mention of Dastari administering to the Second Doctor a drug that he bemoans " affects the memory " ) ; the novel " The Empire of Glass " features the First Doctor directly after his return from the events of " The Three Doctors " , his memory of the adventure having been totally erased barring a vague recollection of meeting " a dandy and a clown " .