Home People Robert Sean Leonard Robert Sean Leonard shows Robert Sean Leonard shows Robert Sean Leonard TV Shows (10) The Hot Zone (2019) As Walter Humbolt, He was 50 years old The Good Doctor (2017) As Shamus O'Malley, He was 48 years old Battle Creek (2015) As Brock, He was 46 years old The Blacklist (2013) As Frederick Barnes, He was 44 years old The Good Wife (2009) As Del Paul, He was 40 years old House (2004) As James Wilson, He was 35 years old Wasteland (1999) As Jesse's ex, He was 30 years old Law & Order: Special Victims Unit (1999) As A.D.A. Kenneth O'Dwyer, He was 30 years old The Outer Limits (1995) He was 26 years old Hallmark Hall of Fame (1951) He was 17 years old
