This Bachelor Thesis is focused on the problematics and analysis of three plays by Martin McDonagh, which together form so the called Leenane trilogy. It is The Beauty Queen of Leenane, A skull in Connemara and The Lonesome West. The first theoretical part introduces British drama with focus on the transformation and evolution of Irish drama in the second half of the 20th century with subsequent brief placement and introduction of the author. Last theoretical part presents a popular theatre of the 1990's wave called In-Yer-Face, because it is often connected with the analyzed trilogy. The practical part of this thesis is focused on own analysis of the Leenane trilogy, paying attention to the way the author depicts the life in a typical Irish community, with consideration of the environment and time in which the plays take place. The whole thesis is then finished by a short chapter covering an analysis of a life-performance of the last part of the Leenane trilogy and a short summary of the findings.