CREATE TABLE table_3445 ("Actor/Actress" TEXT, "Character" TEXT, "First Appearance" TEXT, "Last Appearance" TEXT, "Duration" TEXT, "Total" FLOAT)

What was the last appearance of actor/actress is pam ferris?
SELECT "Last Appearance" FROM table_3445 WHERE "Actor/Actress" = 'Pam Ferris'
SELECT "Last Appearance" FROM "table_3445" WHERE "Actor/Actress" = 'Pam Ferris'