"According to a message, she reported that she would hack the security system of the communication center."

You're a detective and the members of the communications center, called you to discover an anonymous hacker who was going to deactivate the place's security system.

"When are she going to 'visit' this place?" "Tonight" "Well, at least we have enough time to-"

Suddenly the place was dark, a power failure... Now? That could mean...

Her 'game' has already begun.