Both The Road to Omaha (the sequel to The Road to Gandolfo, which was written earlier on) are comedic thrillers written by MacKenzie Hawkins who used a pseudonym (a ficticious name that a person or group uses for a particular purpose) of Michael Shephard for the first book.
Robert Ludlum While the earlier novel was originally published under the pseudonym Michael Shepherd, The Road to Omaha was released under Ludlum's name. 
