CREATE TABLE table_22604 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB)

What is title of episode 06-02-406?
SELECT "Title" FROM table_22604 WHERE "Production code" = '06-02-406'
SELECT "Title" FROM "table_22604" WHERE "Production code" = '06-02-406'