I must confess to feeling a warm tremble every time I hear “I Vow to Thee, My Country”, a result of the potent mix of Gustav Holst’s stately music and Cecily Spring Rice’s allusive words. So when Julian Mitchell chose the words “Another Country”, from the poem’s second verse, as the title for his 1981 play, both the name and the story had that wonderful quality of resonance. After all, I’m as fascinated as the next man by the tale of treason that is the Cambridge spy ring, which culminated in the defection of Guy Burgess, Donald Mclean and Kim Philby.

The “fantasy” Riviera conjured by designer Peter McKintosh for the West End premiere of Dirty Rotten Scoundrels - the Musical is pretty much an extension of the Savoy Theatre’s shining Art Deco auditorium, its sleek angular segments gliding into position like they too have been choreographed by director/choreographer Jerry Mitchell. So it looks devilishly good and it smells of money and deception. Which (as those of you have seen the semi-classic movie will know) is precisely what this expensively upholstered romp is all about.

There is something forensic about Marius von Mayenburg's examination of human nature in this 2004 play, written when he was in his early 30s and the Iraq war still on the television news. Eldorado, a money-making project to rebuild some of the devastated areas of a city - divided, invaded, bombed - is in a long line of ventures undertaken by colonialists and conquerors. Hence its name, reminiscent of European, gold-inspired adventures in South America in the sixteenth century. The place in this case is unnamed.

Swedish director Maria Aberg, making her Royal Exchange debut, sets Shakespeare's comedy in 1945 post-war Britain and strives to play in the effects of war on the home front, where women are in charge and have taken on men’s roles. The same goes for some of the casting here. Gender-blind casting is apparently a mission of Aberg's, to redress a male bias. So Leonato, still listed as the Governor of Messina, becomes Leonata, while Constable Dogberry and his sidekick Verges are played by women.

Thérèse Raquin is not a happy sort of production. This musical adaptation of Émile Zola's 1867 novel transports you to the dank darkness of the Passage du Pont Neuf in 19th century Paris, and reveals the inner workings of a secretly miserable family. There are no jazz bands or catchy melodies here.

We’ve now learned from the films of Paolo Sorrentino and honorary Roman Ferzan Ozpetek what great and nuanced ensemble acting the Italians can produce. Even so, the towering star of the current scene is the chameleonic Toni Servillo, already hailed as seemingly impassive capo di tutti capi Andreotti in Il Divo and as the (Oscar-winning) regretful playboy Jep Gambardella in the stupendous La grande bellezza (The Great Beauty).

The names have been changed to protect the guilty but half the fun of I Can’t Sing! - the so-called X-Factor musical - lies in the relentless spoofing of a show we love to hate and a format so unremittingly predictable that its contestants, judges, and host now read like characters from a, well, musical.

How do you explore extremes of feeling on stage? In cult pen-master Philip Ridley’s new play, a 75-minute monologue that won plaudits in Edinburgh last year, he takes us by the hand and throws us into a universe of pain. His mouthpiece is comedian and actor Gemma Whelan — who plays Yara Greyjoy of the television series Game of Thrones — and is now Andrea, a 15-year-old from the East End of London who is groomed for sex by an older man.

Just before the curtain came up for the second half of Fatal Attraction, a chap sitting behind me told his companion, “All I remember is that it ends quite badly.” It may seem like a cheap shot, from me, but the comment was apposite in so many ways, not least because the reason for this misbegotten production’s very existence is a writer’s desire to change his ending.

Jon Robin Baitz learnt his craft writing on big American television shows including The West Wing and he created Brothers & Sisters, and Other Desert Cities - his first Broadway play - is another family drama with a political edge. The title comes from the signs saying “Palm Springs/Other Desert Cities” on motorways leading into the Coachella Valley, a vast sprawl of nine cities that have a profusion of resort hotels, spas and golf courses.