Dirty John (TV) Cast - All Actors and Actresses
Andrew Adams
Updated on March 22, 2026
Amanda Peet
as Betty Broderick (8 episodes)
Amanda Peet takes on the role of Betty Broderick. Betty is a devoted wife and mother who becomes entangled in a tumultuous relationship with her husband, Dan Broderick, leading to tragic consequences.
#6
Most popular actor on Dirty John
