Heat 2, which is both a sequel and prequel to the 1995 classic, is in development, and here are the best candidates to play young Chris Shiherlis. Michael Mann's Heat stood out for not just its gripping narrative but also for its stellar performances and ensemble cast. The big appeal of the heist flick was Al Pacino as Detective Hanna hunting down Robert De Niro's criminal mastermind Neil McCauley. However, among the Heat cast was Val Kilmer, who played Chris Shiherlis with such finesse that he often stole scenes from De Niro. Kilmer's portrayal of Shirherlis deftly balanced the character's menacing criminality with a vulnerability that endeared him to audiences.

https://screenrant.com/heat-2-chris-shiherlis-casting-actors/