Paul Curran’s production of Tosca, seen in 2008 and 2012, opened at the COC yesterday afternoon. It didn’t feel like a routine revival production of a warhorse. In fact it felt much fresher and focussed than last time around. Perhaps Mr. Curran, who is again directing, found some new insights or, more likely, the chemistry between the principals is better this time. The result is a very satisfactory show.