The fan-favorite challenge of Telephone returns, but added communication obstacles and an injury make it more challenging than ever. The recipient of the Wine Clue grows confident in a competitor's identity, and an alliance is tested at the Guess Off.

After a shocking elimination, tensions are high in the house. This week's challenge tests the senses as competitors smell, touch, taste and hear clues. The winning pair shares a wine clue, but with no immunity, the Guess Off is the most dramatic yet.