This paper aims to examine a correlation between space and a dismantled family in Cryptogram by David Mamet. It is based on Heterotopia by Michel Foucault and Name of the Father by Jacques Lacan. The action in this play takes place in the living room which is a traditional symbol for peaceful space with any American family. The living room of this play, however, becomes not a space for hope and happiness, but one for loss, betrayal and the dysfunctional family. The mother, Donny, has hard time taking care of her young son, John without her husband, Robert. He left his family for his mistress. The first floor including the living room and kitchen is Dystopian space. John’s bedroom and attic on the second floor is Heterotopia, which is a real space and a space for illusion. It exists in time but also exists outside of time. John sees candles and phantoms in the dark and hears voices in his bedroom. An attic is the repository of past. John is eager to go to the woods with Robert. Robert is the absent father at home. Woods is space for Name of the Father. John wants to move from the realm of the primary relation to the mother in the Imaginary, to that of having the signifier of phallus in the Symbolic. He strives to identify himself with the law of the father.