Will the Masterminds accomplice be discovered and ejected, or will they go undetected and join the game? Plus, will a shower create more chaos than the Mastermind? And Vince must nominate three Houseguests, who will hit the block?

It's the inaugural BB Block Buster! Who will win their way off the Chopping Block? Will it be Amy, Zae, or Kelley who becomes the first evicted? Plus, the Queen of Quarrels goes toe-to-toe with Zae.