CREATE TABLE table_23170118_2 (title VARCHAR2, villains VARCHAR2)

What was the title of the episode where reg lacey (aka mr. b) played the villain?
SELECT title FROM table_23170118_2 WHERE villains = "Reg Lacey (AKA Mr. B)"
SELECT "title" FROM "table_23170118_2" WHERE "Reg Lacey (AKA Mr. B)" = "villains"