The Polar Bear Family & Me (2013)

S4E6 Roots

Kel is on a quest to uncover whether he hails from a lineage of nobility. Meanwhile, Kath discovers a surprising family secret hidden in her walk-in closet, and Sharon unexpectedly reunites with a distant relative from across the globe. This episode features special appearances by Matt Lucas (from Little Britain) and Stephen Page (of Bangarra Dance Theatre fame).