Mephisto is an Internet cat detective. In the course of his daily computer time, he uncovers events that affect him and his community. Things begin to turn dark for Mephisto when a provider (human) he feels close to is found dead in some fly-tipped rubbish. To make matters worse, the longstanding truce with the rats is in danger of collapse. Using his skills Mephisto sets about helping the providers uncover who is responsible. Along with the dead body, he also discovers illegal activity in the neighbourhood. Mephisto, with the help of his close friends, has to try and remedy this state of affairs. The setting for Friends, Family and Feathers: To most humans it looks like a quiet, suburban neighbourhood. There are shops and businesses on a through road and side roads lined with terraced houses and the occasional detached one. To the cats it is full of complex smells, providers and rats. To Mephisto it is a complicated network of internet communications linking the cats and a few none cats to the rest of the world.