A routine visit to his doctor has unforeseen consequences for George Bradstock. During his consultation, he discovers that the doctor's car is for sale and buys the vehicle; but the doctor has unwittingly left something in the back that leads him to encounter the mysterious and charismatic Doctor Mulecannary. George is happy in his somewhat humble occupation; he is a bank teller at a branch of Martins Bank in London. He does not earn very much and this prompts his wife, Dorothy to urge him to seek promotion. Eager to please his wife and having no luck stepping up through the ranks to become manager, George becomes involved in Doctor Mulecannary's money making scheme that does not go completely to plan. While George maintains his faith in the ultimate good intentions of the doctor, Dorothy loathes and mistrusts him, and urges her husband to have no more dealings with Mulecannary. Just who is Doctor Mulecannary? The man is at first a mystery, as he leaves no clues; but eventually George discovers his identity after some strange and life changing events take place. The reader can decide whether Doctor Mulecannary is a man of business, a crook and confidence trickster, or a medical genius.