CREATE TABLE table_73890 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB)

name the title of the episode that ed sherin directed.
SELECT "Title" FROM table_73890 WHERE "Directed by" = 'Ed Sherin'
SELECT "Title" FROM "table_73890" WHERE "Directed by" = 'Ed Sherin'