Who Do You Think You Are? (2009) — Seasons

Season 1 6 episodes Season 2 5 episodes Season 3 5 episodes Season 4 8 episodes Season 5 7 episodes Season 6 7 episodes Season 7 6 episodes Season 8 6 episodes Season 9 6 episodes Season 10 8 episodes Season 11 15 episodes Season 12 11 episodes