CREATE TABLE table_16124 ("No." FLOAT, "#" FLOAT, "Title" CLOB, "Director" CLOB, "Writer" CLOB, "US air date" CLOB, "Storyteller" CLOB, "Villains" CLOB)

How many have Mrs. briar as a villain
SELECT COUNT("No.") FROM table_16124 WHERE "Villains" = 'Mrs. Briar'
SELECT COUNT("No.") FROM "table_16124" WHERE "Villains" = 'Mrs. Briar'