'Big Brother' recap: Tommy Bracco nominates Cliff Hogg and Kathryn Dunn, Christie Murphy becomes third nominee
Big Brother featured the Head of Household, Tommy Bracco, nominating Cliff Hogg and Kathryn Dunn for eviction as well as the special "field trip" competition, which resulted in Christie Murphy's placement on the chopping block, during Sunday night's Season 21 broadcast on CBS.