CREATE TABLE table_16438 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "U.S. viewers  ( millions ) " TEXT)

What is the title of the episode directed by Mark Tinker?
SELECT "Title" FROM table_16438 WHERE "Directed by" = 'Mark Tinker'
SELECT "Title" FROM "table_16438" WHERE "Directed by" = 'Mark Tinker'