Mischief Theatre, the company that brought us, among other things, the all-conquering The Play That Goes Wrong and the not-quite-as-good The Comedy About a Bank Robbery, is back this week at the Cambridge Arts Theatre with Mind Mangler, a two-man show that mixes visual comedy, improvisation, stand-up and magic. Join the Mind Mangler (the excellent Henry Lewis) as he attempts a spectacular return with his acclaimed show, which also features the equally talented Jonathan Sayer as ‘The Stooge’, who pops up in all sorts of places. Witness hilarious feats of mentalism spiral into chaos as the Mind …