CREATE TABLE table_26610 ("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 in the series number of the episode written by Lauren Gussis?
SELECT MIN("No. in series") FROM table_26610 WHERE "Written by" = 'Lauren Gussis'
SELECT MIN("No. in series") FROM "table_26610" WHERE "Written by" = 'Lauren Gussis'