Big Brother 'Big Brother' evicts Kaitlin Barnaby and determines the season's fifth HoH 07/26/2013 Big Brother evicted Kaitlin Barnaby and determined its fifth Head of Household during Thursday night's broadcast of the fifteenth season's fourth live eviction show. Read More RELATED NEWS Former 'Big Brother' houseguest Aaryn Gries has a baby girl with husband Nick WilliamsFormer 'Big Brother' houseguest Aaryn Gries gets engaged to boyfriend of six months'Big Brother's sixteenth season to feature three new major twists TAGS: Big Brother Kaitlin Barnaby Spencer Clawson Judd Daugherty Aaryn Gries Andy Herren Helen Kim Jeremy McGuire McCrae Olson Howard Overby Rachel Reilly Elissa Slater GinaMarie Zimmerman Amanda Zuckerman