you will definitely need to have watched the first season to be au courant with events since the season opener doesn’t even bother with a brief “detective exposition and sergeant plotpoint” sort of recap. (i did some desultory searching for a first season trailer to post here and had no luck; no time to search further! try the bbc america website if you’re really keen.)
the adventures, for those of you not in the octopus-like grip of russell t. davies, is his third reboot of the doctor who series and the second successful spinoff — torchwood being the other one. i can only say that if you’re not watching torchwood you’re missing something very special. but i say that a lot when it comes to doctor who-related things.
sarah jane herself — the eponymous character of the adventures — is an old-school companion; she travelled with the 3rd (jon pertwee) and 4th (tom baker) doctors back in the 1970s-1980s. she’s one of the absolute all-time knock-down drag-out top ten best companions ever and they tried to give her her own show before in the mid-’80s with k9 and company:
, at least, also seems to be up on youtube in 9-10 minute chunks if you’re into watching things that way):