An actor involved in the kidnappings is the police, that actually does create a 'relationship' with the kidnappers in the long run. This means that killing the

An actor involved in the kidnappings is the police, that actually does create a 'relationship' with the kidnappers in the long run. This means that killing the hostages reduces the future chances of successful kidnappings. Kidnapping is a repeat business also. Second, killing the hostage could make the pursuit a lot more intense: releasing the hostage might put it dead on its tracks . Police has limited resources, and successfully resolved kidnappings are way below murders. And then, there is actually a human decision of not killing someone. Criminality is not a switch that turns you into a sociopath.