Question: Name the original air date for Barnaby Southcomb for Charlie Martin
SQL: SELECT "Original air date" FROM "1-18335117-5" WHERE "Director" = 'Barnaby Southcomb' AND "Writer" = 'Charlie Martin';

Question: Name the number in series for number 38
SQL: SELECT MIN("No. in series") FROM "1-18335117-5" WHERE "No. overall" = 38.0;