By Lucy Kenningham Duncan Macmillan’s kickass play People, Places and Things is a story about addiction, but it is also a story about theatre. The main character is a liar, an alcoholic, a drug addict and – just as importantly – an actor. Emma (a role reprised by the brilliant Denise Gough after a 2015 run at the National Theatre) checks into rehab, reluctantly, at a centre that adheres to an Alcoholics Anonymous-style, religion-based approach centred around “The Group”. “We recover as a group,” The Group says. Isolation will lead to relapse. Although she makes the choice to recover, she is no…