Season 3 Episode 8 episode 8 Private Practice Season 3 Episode 8 "Sins of the Father": Promo Trailer 11.14.2009. @ 06:52 Jessel Here's the sneak peek of "Sins of the Father": OMG, Cooper's gonna be arrested! Just a spoiler, this is the episode where we get to see Addison's father and how she treats him coldly.