Spence is the Last Chance Detectives' technical expert who spends his time refurbishing electronic devices (most of which are found in the B-17) for use in solving cases. Even though he is the youngest of the group, Spence serves as the voice of reason of the group and uses his genius and creativity to solve problems.
His father is a geologist working in the vicinity.
|“||Spence Williams: I feel like a mole.
Mike Fowler: (chuckling) Hey! There it is! It's the nose of the plane!
Spence Williams: Yeah!
Mike Fowler: We found the missing plane of Buddy Lewis!
|“||Mike Fowler: Man, how do you do that? I mean is there anything you don't know?
Spence Williams: I don't know. But if I did know what I don't know, I'd know. You know?
Mike Fowler: No.