CREATE TABLE table_3920 ("Episode #" FLOAT, "Series #" FLOAT, "Title" TEXT, "Director" TEXT, "Writer" TEXT, "Original airdate" TEXT, "Viewers  ( millions ) " TEXT)

Who wrote 'what you mean by home'?
SELECT "Writer" FROM table_3920 WHERE "Title" = 'What You Mean By Home'
SELECT "Writer" FROM "table_3920" WHERE "Title" = 'What You Mean By Home'