The Case of the Blackmailer on Stage (cap.17)

The school is organizing a theater play where both teachers and kids make a performance ¿ including a cheek kiss from Ms. Stratford to Fred playing as mother and son! The kids then discover an anonymous blackmail note sent to the play's director, Mr. Pinter. Ms. Janis informs he's rehearsing another play at the Municipal Theater. Two plays at same time? This is suspicious enough to make Charly & Co. discover the truth. Will Fred finally receive the kiss from his beloved Stratford?