CREATE TABLE table_29357 ("Episode No. Episode No. refers to the episodes number in the overall series ,  whereas Series No. refers to the episodes number in this particular series." FLOAT, "Series No." FLOAT, "Episode" TEXT, "Director" TEXT, "Writer" TEXT, "Original airdate" TEXT)

What is every episode with Barry Purchese as the writer?
SELECT "Episode" FROM table_29357 WHERE "Writer" = 'Barry Purchese'
SELECT "Episode" FROM "table_29357" WHERE "Writer" = 'Barry Purchese'