Fabulous little series of vignettes: Four Times Martha Met Sarah Jane and One Time She Didn't Quite
The third time Martha Jones meets Sarah Jane Smith, it's 1969, and the Doctor's just given her a very strict lecture about the consequences of mucking about with the past. She's a bit peeved about it, frankly - she's already heard it before, thanks, and her memory's just fine. She's just gone on shift when someone who can only be Sarah Jane, even if she's twenty years younger, walks in with a wild-haired, ridiculously scarved bloke who's rattling off almost the exact same speech Martha'd heard not twenty minutes ago.
The third time Martha Jones meets Sarah Jane Smith, it's 1969, and the Doctor's just given her a very strict lecture about the consequences of mucking about with the past. She's a bit peeved about it, frankly - she's already heard it before, thanks, and her memory's just fine. She's just gone on shift when someone who can only be Sarah Jane, even if she's twenty years younger, walks in with a wild-haired, ridiculously scarved bloke who's rattling off almost the exact same speech Martha'd heard not twenty minutes ago.