CREATE TABLE table_30456 ("Series #" FLOAT, "Title" TEXT, "Written by" TEXT, "Directed by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( millions ) " TEXT)

What is th title of the episode written by Nick Thiel?
SELECT "Title" FROM table_30456 WHERE "Written by" = 'Nick Thiel'
SELECT "Title" FROM "table_30456" WHERE "Written by" = 'Nick Thiel'