Question: what i the maximum number in the series where the production code is 3WAB07?
SQL: SELECT MAX("No. in series") FROM "1-20726262-4" WHERE "Production code" = '3WAB07';

Question: what is the maximum number in the season wher the us viewers is 2.59?
SQL: SELECT MAX("No. in season") FROM "1-20726262-4" WHERE "U.S.viewers (million)" = '2.59';

Question: what is the written by and production code is 3WAB03?
SQL: SELECT "Writtenby" FROM "1-20726262-4" WHERE "Production code" = '3WAB03';