CREATE TABLE table_23504 ("No. in series" CLOB, "No. in season" CLOB, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( millions ) " CLOB)

Who wrote the episode titled 'Mission gone bad' 'Trapped in Paris'?
SELECT "Written by" FROM table_23504 WHERE "Title" = 'Mission Gone Bad" "Trapped in Paris'
SELECT "Written by" FROM "table_23504" WHERE "Title" = 'Mission Gone Bad" "Trapped in Paris'