Once a person answers the phone, they are asked by the 'Cluemaster', played by Justin Melvey, if they would like the chance to win $25,000.
Therefore, the more memory cards the team has, the more pictures they receive and the easier it is to work out their final location.
If the team has difficulty completing a task, or wish to buy another memory card, the Cluemaster can take away money from the briefcase, which can range from $1,000 to $5,000.
Once they have reached the final destination the two contestants are told they are no longer a team and only one of them can win the cash inside a briefcase.
[1] The Phone has been compared to The Bourne Identity, 24, The Mole and The Amazing Race[2][3][4] based on the tasks performed and how teams go about completing them.