The week in theatre: Missing; Holy Sh!t; The Humans " review
Battersea Arts Centre; Kiln; Hampstead, LondonMissing reappears three years after fire interrupted its run at the Battersea Arts Centre, while the Kiln opens with some topical grievancesThese are whirligig weeks for London theatre. Last week, Madani Younis let it be known that he was moving from the Bush to be the creative director of the South Bank, while Rachel O'Riordan was announced as the replacement for Sean Ho…