user: Question: What was the title of the episode where Reg Lacey (AKA Mr. B) played the villain?
Columns: ['Episode Number', 'Title', 'Villains', 'Director', 'Writer', 'Original airdate']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1 (11)', '"It\'s a Kind of Magic"', 'Leah Retsam and The Grandmaster', 'Toby Haynes', 'Keith Brumpton, Nathan Cockerill', '7January2008']
SQL:

assistant: SELECT "Title" FROM "Table" WHERE "Villains" = 'Reg Lacey (AKA Mr. B)';