By Lucy Kenningham Let’s be honest, the Lehman Trilogy first performed in 2013 has run its course and is more than a little problematic A boardroom in a glass box. The New York skyline on a screen in the background. Cardboard filofax boxes on a table. Three men in suits, performing the whole production. You already know what I’m talking about. The Lehman Trilogy is on for its third run (showing at the Gillian Lynne Theatre until January) which begs the question: why do so many people flock to see a play about finance? Well, ultimately, it’s not a play about finance but about the American dream…