Detective Casey has tracked down a criminal who is known for getting in and out of a crime scene without a trace. The thief (Scarlett) tells Casey that if she can beat her in a fight, she can have the stolen goods.

Scarlett is however a powerful illusionist and soon disappears without a trace, badgering and beating up Casey while she is invisible!

The only way Scarlett can be seen is if the detective can solve a riddle that the thief has given her. Time to solve the case!