Alan and Nicole Wiseman are a genetic anomaly: twins of different sex. They were born linked from their back, and grew up between operations, psychological treatments, a suicidal mother and a father who despises and fears them. But, thanks to all this, they are business geniuses, charming … and complete psychopaths. Their love for an old television show, The Black Octopus, will inspire them to plan the murder of all the people who have tried to ruin their lives. Very special software will help them achieve the perfect crime. But their ego will face them with the consequences of their actions … and perhaps with the same death.