Bruce Jenner Braces for 'Emotional Roller Coaster' in New 20/20 Promo

Bruce Jenner anticipated his sitdown with ABC’s Diane Sawyer to be an “emotional roller coaster,” he says in the latest promo for his 20/20 tell-all.

Airing Friday at 9/8c, the two-hour Bruce Jenner: The Interview special promises “a far-ranging interview,” period, with the Olympic gold medalist-turned-reality TV family patriarch, who is expected to discuss for the first time his rumored transition from male to female.

Whatever his journey is, Jenner with enthusiasm says in the promo that he is curious to see “how this story ends.” Watch the full promo above.