Iris Plays Key Role in Musical Crossover with Supergirl

From Fans of the CW’s Arrowverse have been eagerly anticipating the musical crossover between ‘The Flash’ and ‘Supergirl’ for a very long time now, and not just because it will allow stars Grant Gustin and Melissa Benoist to return to their ‘Glee’ roots (not to mention have them reunited with their former ‘Glee’ co-star […]