In this installment of Catching Up On Cinema’s “May is For Monsters” event, we review the new Shudder exclusive, Monstrum (2018)! Directed by Heo Jong-ho, and starring Kim Myung-min, Lee Hye-ri, and Choi Woo-shik, the film is spectacle driven monster on the loose flick set during Korea’s Joseon era. Equal parts blockbuster action thriller and…