Guards at the Taj, now playing at Steppenwolf Theatre, is certainly among the best shows ever to play in Chicago.

Set in 1648, Guards at the Taj recounts a gruesome legend that surrounds the construction of the renowned masterpiece, the Taj Majal in Agra, India. That apocryphal story holds that Mughal emperor Shah Jahan, who commissioned the Taj, decreed that the architect and 20,000 artisans involved in its construction should be behanded – lest anyone ever again equal its magnificent design.

Playwright Rajiv Joseph works with this fable as fact and explores the behanding from the point of view of the two Hindustan Army Guards who will carry it out. We first see them stationed at a wall that we learn is shielding the construction site from view. As the play opens, we meet the dutiful and rational Humayan (Omar Metwally), at his post since dawn, eyes forward, posture erect. A few moments later, in scurries Babur (Arian Moayed), a dreamer whose uniform is askew and who is late for his post and struggles to stay focused and hold his sword properly.

The two, who have known each other since childhood, are closely bonded – but with the tensions and friction that inhabit any long-term relationship. Humayan aspires to a rise in rank, and wants to bring Babur along with him, even though he knows Babur's quirky personality could present risks.

Joseph, who won the 2010 Pulitzer Prize for his play Bengal Tiger at the Baghdad Zoo, gives us a sophisticated work, with banter by Humayan and Babur adeptly foreshadowing what is to transpire. 

From the historical record, we know that the Taj Mahal was surrounded by a brick scaffold during construction, which was demolished to reveal the architectural wonder when it was completed. This moment in time becomes a turning point in the play, as Babur turns away from his position to be among the first in history to gaze upon the magnificent Taj Mahal. He soon convinces Humayan to do likewise. And through their expressions, we see the Taj Mahal as if for the first time as well.

From that moment at the wall, we soon shift scenes to find the two in the aftermath of carrying out the behanding, which is not at all as off-putting as it sounds. Director Amy Morton has carefully metered the presentation of horror so we recognize it without experiencing it too directly.

Joseph also faces us with a perennial question asked by civilized society – when should our personal moral compass override external authority? And subtly, perhaps, Joseph may be asking how such a heinous event could so readily be accepted as likely to be true - is it because it happened in the Far East?

The dialog in Guards at the Taj is enthrallingly naturalistic and contemporary, giving it an immediacy that penetrates any distance from the characters on stage. It is no wonder the script won a 2016 Obie Award for Best New Play.

The production of this work is nothing short of perfect, and the play itself is extraordinarily good. Written by Joseph expressly for its co-stars, Omar Metwally and Arian Moayed, this production feels more like a slightly delayed move from Broadway, where it received a highly regarded run in 2015. Amy Morton, a Steppenwolf ensemble member, directed both shows.

Likewise, the set, designed by Tim Mackabee for the original show and this one, ingeniously transforms from a blank stone wall outside the Taj Mahal, into a subterranean cell. Costumes by Bobby Frederick Tilley are outstanding, as the guards move through various degrees of formal military attire, to layered garb for their nefarious job.

The show runs through July 22 at Steppenwolf Theatre, and is very highly recommended.