Limit is a 2009 novel by German author Frank Schätzing (who also wrote Der Schwarm).The year is 2025. Man has returned to the moon and started mining helium-3, an isotope needed for running fusion reactors. As you can imagine, shipping stuff to and from the moon is quite expensive, meaning that mankind is nevertheless still far away from not having to rely on fossil fuels anymore. Julian Orley, visionary and founder of Orley Industries, wants to change this by means of a Space Elevator. Also, he wants to establish moon tourism. To this end he gives a grand tour through his space and moon facilities for a hand-picked group of potential investors, super-rich people from all around the world. At first, everything goes as planned, with everyone having a splendid time. But soon, trouble starts to crop up...Meanwhile in China, Private Detective Owen Jericho gets hired to find his client's daughter, Chen "Yoyo" Yuyun, a cyber-dissident. Owen soon discovers that Yoyo had to go into hiding because she accidentally stumbled over something she was not meant to see. Now the highly dangerous, psychopathic hitman Kenny Xin is close on her and Owen's heels...
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