The densely packed paintings found in Alex Gross' latest monograph Prison of the Mind extend the ideas he'd developed in the prior decade while turning the pop culture references up to eleven. Fresh themes and settings find his flawless oil paintings skating to the outer limits of the absurd. Finely rendered Darth Skater at the skate park and Cersei and Jaime Lannister, the villains from "Game of Thrones," sharing Tic-Tacs simultaneously amaze...