For Megan Carmitchel, Michael Cusimano and Frankie Errington, their new Chalk Circle Collective theater production company began with a conversation — and a dilemma. “Michael came to me with a two-person play that we wanted to do together,” recalled Carmitchel, who, like Cusimano, is a busy actor around town. “Then the three of us were trying to find a way to do this play.
” For its first production, Chalk Circle is taking over Diversionary Theatre’s Blackbox space in University Heights. Carmitchel and Cusimano are co-starring in Jeffrey Hatcher’s adaptation of Henry James’ ghost story “The Turn of the Screw,” with Errington directing. In this two-person production of that same play that she and Cusimano first talked about doing, Carmitchel will play the unnamed governess hired to look after two children on an estate in Essex, England.