The House Turned Upside Down in Episode 21

Competing in the HoH

Nicole and Cody compete in the "Hindsight's 20/20" HOH competition on BIG BROTHER, Sunday, August 10 (8:00 -- 9:00 PM, ET/PT) on the CBS Television Network. Photo: Lisette M. Azar/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

Victoria and Derrick compete

Victoria and Derrick compete in the "Hindsight's 20/20" HOH competition on BIG BROTHER, Sunday, August 10 (8:00 -- 9:00 PM, ET/PT) on the CBS Television Network. Photo: Lisette M. Azar/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

"Hindsight's 20/20"

Frankie and Zach compete in the "Hindsight's 20/20" HOH competition on BIG BROTHER, Sunday, August 10 (8:00 -- 9:00 PM, ET/PT) on the CBS Television Network. Photo: Lisette M. Azar/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

Outgoing HoH Caleb

Caleb during the "Hindsight's 20/20" HOH competition on BIG BROTHER, Sunday, August 10 (8:00 -- 9:00 PM, ET/PT) on the CBS Television Network. Photo: Lisette M. Azar/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

Victoria and Cody

Winning HoHs

Confrontation

Talking strategy

Houseguests, Derrick, Cody, Caleb, Zach, and Frankie on BIG BROTHER, Sunday, August 10 (8:00 -- 9:00 PM, ET/PT) on the CBS Television Network. Photo: Sonja Flemming/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved.

Who's calling who out?

Houseguests, Cody, Zach, Caleb, and Frankie on BIG BROTHER, Sunday, August 10 (8:00 -- 9:00 PM, ET/PT) on the CBS Television Network. Photo: Sonja Flemming/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved.

Christine contemplates her decision

Beast Mode Cowboy

Cody and Zach

Competition set-up

Houseguests compete in the "Hindsight's 20/20" HOH competition on BIG BROTHER, Sunday, August 10 (8:00 -- 9:00 PM, ET/PT) on the CBS Television Network. Photo: Lisette M. Azar/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

HoH Set-up