Question: Name the original airdate for Robin Mukherjee and Margy Kinmonth
SQL: SELECT "Original airdate" FROM "1-27208814-1" WHERE "Writer" = 'Robin Mukherjee' AND "Director" = 'Margy Kinmonth';

Question: Name the least series number for episode number being 78
SQL: SELECT MIN("Series No.") FROM "1-27208814-1" WHERE "Episode No. Episode No. refers to the episodes number in the overall series, whereas Series No. refers to the episodes number in this particular series." = 78.0;