When a contestant uses this lifeline, he/she will get help from an expert whose identity is revealed at the beginning of the show. There is no time limit and the contestant can freely discuss with the expert.
- In 2008, contestants can ask the expert on a question, but they're not allowed to use it until they correctly answer the fifth question. After they decided to remove the Phone-a-Friend lifeline, this lifeline is now available for all 15 questions.
- This lifeline did not appear in the video game Who Wants to be a Millionaire? 2010 Edition.