Thomas Gregson

Thomas "Tommy" Gregson is the captain of the NYPD's Major Cases unit at the 11th Precinct and has been a police officer for over thirty years. He was the youngest detective in the history of the 14th Squad and took over Major Cases at age 40.[1] While observing the counter-terrorism bureau at Scotland Yard, he met Holmes and, years later, allowed him to work with the Major Cases unit as a consulting detective.[2] He was married to Cheryl Gregson and has several daughters.[3] One is Hannah, who is a police officer at the 15th Precinct and aspires to become a captain.[4] He is portrayed by actor Aidan Quinn.