CREATE TABLE table_24599 ("Season no." FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. Viewers  ( millions ) " TEXT)

What was the season number episode directed by John David Coles?
SELECT "Season no." FROM table_24599 WHERE "Directed by" = 'John David Coles'
SELECT "Season no." FROM "table_24599" WHERE "Directed by" = 'John David Coles'