Zoë and Dan try to find out if a medical researcher who was locked in a room filled with hydrogen gas was murdered or if the incident was an accident. A psychic who claims to be receiving messages helps them and eerily is able to give them clues to the mystery. Meanwhile, Zoë bids on a silver dollar on an online auction and is frustrated when another bidder - the "Smooth Talker" keeps topping her bids! Also, Hannah asks the psychic if she can talk to her mom.