Its executive producer and principal director was Paris Barclay, who directed 35 episodes, the most of any director on the series, and the only one to direct episodes in all three seasons. The program, which stars Gabriel Byrne as Paul, debuted on January 28, 2008, as a five-night-a-week series. In Treatment is an American drama television series for HBO, produced and developed by Rodrigo Garcia, about a psychotherapist, 50-something Paul Weston, and his weekly sessions with patients, as well as those with his own therapist at the end of the week.
