Bøger i Invisible Series serien

Everyone thinks Emma Dockery is crazy. Obsessed with finding the link between hundreds of unsolved cases, Emma has taken leave from her job as an FBI researcher. That is, until Emma finds a piece of evidence he can't afford to ignore.

But a new case - unfolding across the country - has left her looking for something which may not exist.The victims all appear to have died by accident, and seemingly have nothing in common.