Ok, so Andy Andy comes into the bar, naturally scaring Diane (If you wanna do a background check, see Diane's perfect date, season 1) but Sam thinks she is overreacting, until he pulls out a gun and sticks up the bar. Carla manages to pin him down though while Sam grabs the gun. Sam calls the cops which is when Diane learns that he only wants to go back to jail because he can't make it on the outside but would really love to be an actor so she agrees to coach him. She does this decpite Sam's pleas and Andy falls in love with her. When he tells her this, she reciprocates these feelings of love for him as a friend. Andy sees her kissing Sam though and feels betrayed so when they are acting out the scene, he turns the Othello murder scene into a real one and starts strangling Diane. Diane manages to scream 'This psycho is trying to kill me' but the guys think it's part of the play. it's only when Andy screams 'I saw you kissing Sam' does Sam realise and pull him off her. Norm then sits on him whilst Sam checks Diane is okay.
This wonderful episode is a complete classic with the brilliant Andy Andy, the play and the look of sheer terror in Shelley Long's eyes is so believeable, this episode really has the golden touch and is a season, no, show classic