Excellant story. Not as dark and grim as some of the others in the series, despite the fact that the poor victim is decapitated. I think that the product description above gives rather too much away.
Here you have 4 young friends and business partners. All owners of a fledgling e-game company. 3 of them, Bart the business and e-genius, Cill the organisational and e-expert and Benny, the research and e-genius, have all known each other since childhood. They meet and link up with Var, Marketing and e-genius at university. Roarke meets Bart at a conference and immediately wants to recruit him, but Bart and his friends want their own business, so Roarke gives them advice and helps them. Of the 4, Bart is the overall genius and front-guy of the team. Nice, easy going, well-liked by everyone. So who then would want to decapitate him and how was it done? That is the problem for Eve.
Bart's apartment has security inside and out tighter than Fort Knox. Both the doorman and security disks are adament that no-one went into the apartment with Bart, or arrived after him. So how did the killer get in and why was nice guy Bart killed? Here Eve is out of her depth. She is no e-geek. So she has to rely on Roarke, Feeney and McNab. However, all security systems indicate that Bart was the only one there and was the only person playing the new,in-development game. However, Bart's security system on his computer destroys the game disc when the police e-team try and remove it from the computer.
Then the killer goes after another of the partners.
I did actually have some vague idea after a few chapters who the killer might be and this grew as the book progressed, as a few clues are dropped here and there. However, although I also had an idea of how the murder and attempt might have been done, I couldn't figure out the details of exactly how, as it seemed too Fantastical! Excellant read, which holds you well throughout.