Richard Riordan appears in Turnabout Confusion by Dennis as one of the senior partners of Vitale, Horowitz, Riordan, Schrecter, Schrecter, and Schrecter.
Riordan is described as a handsome man in his early 60s. He is lean and fit, with a mane of silver hair and piercing blue eyes. He tends to show a calm demeanor and speak softly, giving the impression that he is mind-mannered, but he has a razor sharp intellect.
Role at Vitale, Davis, Horowitz, Riordan, Schrecter, Schrecter, and Schrecter
Riordan's role in the law firm is somewhat nebulous. Helen Morgendorffer believes he is not directly involved in any illegal activities at the firm, but he is too senior not to know what is going on. Given Riordan's interactions with Helen in Turnabout Confusion, he may be seen as a liaison or facilitator between the various factions of the law firm. He has a healthy respect for Jim Vitale, who he often refers to as "Himself," but the nature of their relationship is unclear.