Open by appointment only, Rachel Whiteread’s “Internal Objects” is on view at Gagosian’s Grosvenor Hill location through June 6. Employing ideas of minimalism in more complicated forms, Whiteread’s new works are presented in an all-white installation where the artist has created detailed works that suggest a hidden narrative—like the wood and metal Poltergeist, which takes the form of an abandoned, decrepit structure covered in household paint.