An adventure on the wide open ocean, and Ruby is all at sea. Can she crack the case while evading the clutches of the evil Count von Viscount? Well, you wouldn't want to bet against her.

Ruby Redfort: undercover agent, code-cracker and thirteen-year-old genius - you can count on her when the ice starts to crack. All good things come to an end ... Ruby Redfort is running scared, a whole bunch of people want her dead and worst of all one of them is on her team. But just who is this agent of doom? You can run, Ruby, but you can't hide ...

Thirteen-year-old genius and undercover agent Ruby Redfort finds herself dealing with poisonous rumors floating around the community of Twinford that compel her to brush up on her martial arts skills.

Ruby Redfort has a lot of reasons to feel confident. Undercover agent, code cracker, thirteen-year-old genius - she's one fearless kid, buster. Unmasking an evil villain? Done. Honing her parkour skills by climbing skyscrapers and leaping across roofs? All in a day's work. Heeding the warning signs? Well, not so much. When a ghostly foe begins stealing from the highest buildings in Twinford, Ruby Redfort is ready to defy death one more time to capture...

"Ruby Redfort: you can count on her when the ice starts to crack. Falling through the air at 120 miles per hour? Just relax and think fast. But now even Ruby Redfort is running scared. A bunch of people want her dead, and worst of all, one of them is on her team. When your name is first on a mastermind's hit list, do you lock the doors, switch off the lights, and wait for someone else to do something? Or do you get out there and save yourself? If...