CREATE TABLE table_2618152_1 (no_in_season VARCHAR, written_by VARCHAR)

What is the season number of the episode written by Matt Witten , Richard Sweren?
SELECT no_in_season FROM table_2618152_1 WHERE written_by = "Matt Witten , Richard Sweren"
SELECT "no_in_season" FROM "table_2618152_1" WHERE "Matt Witten , Richard Sweren" = "written_by"