Part of the humour comes from the fact that Jonathan often does not want to get involved in other people's problems, and has to be pressured into it by Maddy, Carla or Joey. In "The Scented Room", which centred around a theft from a critic who had lambasted Adam's act, he took great delight in announcing that he had solved the crime but wasn't going to tell anybody how it was done. Initially, Jonathan was only brought in to investigate because he was asked by Maddy due to her having a professional connection to the crime in her role as a journalist, or because it involved an old friend of theirs (such as one case featuring Jonathan being contacted by an old friend of his mother's after her husband was impaled by a sword in a sealed room). As time went on, he acquired a more significant reputation and was independently recruited by such varied contacts as a chief of police or even the United States military.